diff --git a/.eslintrc.json b/.eslintrc.json
index 2168c69..48df1d3 100644
--- a/.eslintrc.json
+++ b/.eslintrc.json
@@ -11,7 +11,12 @@
       "beforeEach": true,
       "afterEach": true
     },
-    "ecmaFeatures": {
-      "experimentalObjectRestSpread": true
+    "parserOptions": {
+      "ecmaFeatures": {
+        "experimentalObjectRestSpread": true
+      }
+    },
+    "rules": {
+      "react/prefer-es6-class": 0
     }
 }
\ No newline at end of file
diff --git a/Readme.md b/Readme.md
index bf91ace..ca459a5 100644
--- a/Readme.md
+++ b/Readme.md
@@ -1,5 +1,6 @@
 # React DFP
-Inspired on jquery.dfp :-)... gpt/dfp components for react.
+Gpt/dfp components that you can easily use in your isomorphic react apps. This package is inspired in the awesome library [jquery.dfp](https://github.com/coop182/jquery.dfp.js), and aims to provide its same ease of usage but, of course, taking into consideration the react concepts & lifecycle features.
+
 
 ## Install:
 ```
diff --git a/grunt/aliases.yaml b/grunt/aliases.yaml
index c3d21cb..49383d5 100644
--- a/grunt/aliases.yaml
+++ b/grunt/aliases.yaml
@@ -2,6 +2,7 @@ default:
   - 'dist'
 
 dist:
+  - 'eslint'
   - 'clean'
   - 'babel:dist'
   
diff --git a/js/adslot.js b/js/adslot.js
index 0c66628..d453094 100644
--- a/js/adslot.js
+++ b/js/adslot.js
@@ -1,6 +1,6 @@
 
 import React from 'react';
-import {DFPManager} from './manager';
+import { DFPManager } from './manager';
 
 
 export const AdSlot = React.createClass({
@@ -20,71 +20,65 @@ export const AdSlot = React.createClass({
     shouldRefresh: React.PropTypes.func,
     slotId: React.PropTypes.string,
   },
-  
-  
+
   getDefaultProps() {
     return {
       fetchNow: false,
     };
   },
-  
+
+  getInitialState() {
+    return { ...this.props, slotId: this.generateSlotId() };
+  },
+
+  componentDidMount() {
+    this.registerSlot();
+  },
+
+  componentWillReceiveProps(nextProps) {
+    if (nextProps.hasOwnProperty('objectId')) {
+      const state = this.state;
+      state.slotId = this.generateSlotId();
+      this.unregisterSlot();
+      this.setState(state);
+      this.registerSlot();
+    }
+  },
+
+  componentWillUnmount() {
+    this.unregisterSlot();
+  },
+
+  getSlotId() {
+    return this.props.slotId || this.state.slotId;
+  },
+
   generateSlotId() {
     let slotId = this.props.slotId;
     if (slotId === undefined) {
-      let seconds = (Date.now && Date.now() || new Date().getTime()) / 1000;  
+      const seconds = (Date.now && Date.now() || new Date().getTime()) / 1000;
       slotId = `adSlot-${seconds}`;
     }
-    return slotId
-  },
-  
-  getSlotId() {
-    return this.props.slotId || this.state.slotId;
+    return slotId;
   },
 
   registerSlot() {
-    DFPManager.registerSlot({ ...this.props, ...this.state, slotShouldRefresh: this.slotShouldRefresh });
+    DFPManager.registerSlot({ ...this.props, ...this.state,
+                              slotShouldRefresh: this.slotShouldRefresh });
     if (this.props.fetchNow === true) {
       DFPManager.load(this.getSlotId());
     }
     DFPManager.attachSlotRenderEnded(this.slotRenderEnded);
   },
-  
+
   unregisterSlot() {
     DFPManager.unregisterSlot({ ...this.props, ...this.state });
     DFPManager.detachSlotRenderEnded(this.slotRenderEnded);
   },
 
-  getInitialState() {
-    return { ...this.props, slotId: this.generateSlotId() };
-  },
-  
-  componentDidMount() {
-    this.registerSlot();
-  },
-
-  render() {
-    return (
-      <div className="adunitContainer"> <div id={this.getSlotId()} className="adBox" /> </div>
-    );
-  },
-
-  componentWillUnmount() {
-    this.unregisterSlot();
-  },
-
-  componentWillReceiveProps: function(nextProps) {
-    if (nextProps.hasOwnProperty('objectId')) {
-      let state = this.state;
-      state.slotId = this.generateSlotId();
-      this.unregisterSlot();
-      this.setState(state);
-      this.registerSlot();
-    }
-  },
-
   slotRenderEnded(eventData) {
     if (eventData.slotId === this.getSlotId()) {
-      if (this.props.onSlotRender !== undefined) { 
+      if (this.props.onSlotRender !== undefined) {
         this.props.onSlotRender(eventData);
       }
     }
@@ -93,8 +87,15 @@ export const AdSlot = React.createClass({
   slotShouldRefresh() {
     let r = true;
     if (this.props.shouldRefresh !== undefined) {
-      r = this.props.shouldRefresh({...this.props, slotId: this.getSlotId()});
+      r = this.props.shouldRefresh({ ...this.props, slotId: this.getSlotId() });
     }
     return r;
   },
+
+  render() {
+    return (
+      <div className="adunitContainer"> <div id={this.getSlotId()} className="adBox" /> </div>
+    );
+  },
+
 });
diff --git a/js/manager.js b/js/manager.js
index 81ee6dc..8ebeefe 100644
--- a/js/manager.js
+++ b/js/manager.js
@@ -114,14 +114,15 @@ export const DFPManager = Object.assign(new EventEmitter(), {
     const slotsToRefresh = Object.keys(registeredSlots).map(
       (k) => registeredSlots[k]
     );
-    return slotsToRefresh.reduce( (val, slot) => { 
+    const slots = {};
+    return slotsToRefresh.reduce((last, slot) => {
       if (slot.slotShouldRefresh() === true) {
-        val[slot.slotId] = slot; 
+        slots[slot.slotId] = slot;
       }
-      return val; 
-    }, {});
+      return slots;
+    }, slots);
   },
-  
+
   refresh() {
     if (loadAlreadyCalled === false) {
       this.load();
@@ -153,11 +154,11 @@ export const DFPManager = Object.assign(new EventEmitter(), {
   unregisterSlot({ slotId }) {
     delete registeredSlots[slotId];
   },
-  
+
   getRegisteredSlots() {
     return registeredSlots;
   },
-  
+
   attachSlotRenderEnded(cb) {
     this.on('slotRenderEnded', cb);
   },
diff --git a/js/utils.js b/js/utils.js
index afd50c2..f1ff67a 100644
--- a/js/utils.js
+++ b/js/utils.js
@@ -21,17 +21,3 @@ export function loadGPTScript() {
   });
 }
 
-let docIsReady = null;
-export function onDocumentReady() {
-  if (docIsReady === null) {
-    docIsReady = new Promise((resolve) => {
-      if (document.readyState !== 'loading') {
-        resolve();
-      } else {
-        document.addEventListener('DOMContentLoaded', () => resolve());
-      }
-    });
-  }
-  return docIsReady;
-}
-
diff --git a/lib/adslot.js b/lib/adslot.js
index 62a7c6e..4f596dc 100644
--- a/lib/adslot.js
+++ b/lib/adslot.js
@@ -38,6 +38,27 @@ var AdSlot = exports.AdSlot = _react2.default.createClass({
       fetchNow: false
     };
   },
+  getInitialState: function getInitialState() {
+    return _extends({}, this.props, { slotId: this.generateSlotId() });
+  },
+  componentDidMount: function componentDidMount() {
+    this.registerSlot();
+  },
+  componentWillReceiveProps: function componentWillReceiveProps(nextProps) {
+    if (nextProps.hasOwnProperty('objectId')) {
+      var state = this.state;
+      state.slotId = this.generateSlotId();
+      this.unregisterSlot();
+      this.setState(state);
+      this.registerSlot();
+    }
+  },
+  componentWillUnmount: function componentWillUnmount() {
+    this.unregisterSlot();
+  },
+  getSlotId: function getSlotId() {
+    return this.props.slotId || this.state.slotId;
+  },
   generateSlotId: function generateSlotId() {
     var slotId = this.props.slotId;
     if (slotId === undefined) {
@@ -46,11 +67,9 @@ var AdSlot = exports.AdSlot = _react2.default.createClass({
     }
     return slotId;
   },
-  getSlotId: function getSlotId() {
-    return this.props.slotId || this.state.slotId;
-  },
   registerSlot: function registerSlot() {
-    _manager.DFPManager.registerSlot(_extends({}, this.props, this.state, { slotShouldRefresh: this.slotShouldRefresh }));
+    _manager.DFPManager.registerSlot(_extends({}, this.props, this.state, {
+      slotShouldRefresh: this.slotShouldRefresh }));
     if (this.props.fetchNow === true) {
       _manager.DFPManager.load(this.getSlotId());
     }
@@ -60,35 +79,6 @@ var AdSlot = exports.AdSlot = _react2.default.createClass({
     _manager.DFPManager.unregisterSlot(_extends({}, this.props, this.state));
     _manager.DFPManager.detachSlotRenderEnded(this.slotRenderEnded);
   },
-  getInitialState: function getInitialState() {
-    return _extends({}, this.props, { slotId: this.generateSlotId() });
-  },
-  componentDidMount: function componentDidMount() {
-    this.registerSlot();
-  },
-  render: function render() {
-    return _jsx('div', {
-      className: 'adunitContainer'
-    }, void 0, ' ', _jsx('div', {
-      id: this.getSlotId(),
-      className: 'adBox'
-    }), ' ');
-  },
-  componentWillUnmount: function componentWillUnmount() {
-    this.unregisterSlot();
-  },
-
-
-  componentWillReceiveProps: function componentWillReceiveProps(nextProps) {
-    if (nextProps.hasOwnProperty('objectId')) {
-      var state = this.state;
-      state.slotId = this.generateSlotId();
-      this.unregisterSlot();
-      this.setState(state);
-      this.registerSlot();
-    }
-  },
-
   slotRenderEnded: function slotRenderEnded(eventData) {
     if (eventData.slotId === this.getSlotId()) {
       if (this.props.onSlotRender !== undefined) {
@@ -102,5 +92,13 @@ var AdSlot = exports.AdSlot = _react2.default.createClass({
       r = this.props.shouldRefresh(_extends({}, this.props, { slotId: this.getSlotId() }));
     }
     return r;
+  },
+  render: function render() {
+    return _jsx('div', {
+      className: 'adunitContainer'
+    }, void 0, ' ', _jsx('div', {
+      id: this.getSlotId(),
+      className: 'adBox'
+    }), ' ');
   }
 });
diff --git a/lib/manager.js b/lib/manager.js
index 52b9d29..3e12ac4 100644
--- a/lib/manager.js
+++ b/lib/manager.js
@@ -128,12 +128,13 @@ var DFPManager = exports.DFPManager = Object.assign(new _events.EventEmitter(),
     var slotsToRefresh = Object.keys(registeredSlots).map(function (k) {
       return registeredSlots[k];
     });
-    return slotsToRefresh.reduce(function (val, slot) {
+    var slots = {};
+    return slotsToRefresh.reduce(function (last, slot) {
       if (slot.slotShouldRefresh() === true) {
-        val[slot.slotId] = slot;
+        slots[slot.slotId] = slot;
       }
-      return val;
-    }, {});
+      return slots;
+    }, slots);
   },
   refresh: function refresh() {
     var _this3 = this;
diff --git a/lib/utils.js b/lib/utils.js
index ccc4adc..d543fdd 100644
--- a/lib/utils.js
+++ b/lib/utils.js
@@ -4,7 +4,6 @@ Object.defineProperty(exports, "__esModule", {
   value: true
 });
 exports.loadGPTScript = loadGPTScript;
-exports.onDocumentReady = onDocumentReady;
 function doloadGPTScript(resolve, reject) {
   window.googletag = window.googletag || {};
   window.googletag.cmd = window.googletag.cmd || [];
@@ -27,19 +26,3 @@ function loadGPTScript() {
     doloadGPTScript(resolve, reject);
   });
 }
-
-var docIsReady = null;
-function onDocumentReady() {
-  if (docIsReady === null) {
-    docIsReady = new Promise(function (resolve) {
-      if (document.readyState !== 'loading') {
-        resolve();
-      } else {
-        document.addEventListener('DOMContentLoaded', function () {
-          return resolve();
-        });
-      }
-    });
-  }
-  return docIsReady;
-}
diff --git a/package.json b/package.json
index 4ed9867..a9a44ad 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "react-dfp",
-  "version": "0.3.3",
+  "version": "0.3.4",
   "author": {
     "name": "Jonatan Alexis Anauati",
     "email": "barakawins@gmail.com"
@@ -14,6 +14,7 @@
     "gpt",
     "dfp",
     "google dfp",
+    "google doubleclick for publishers",
     "advertising",
     "react-component"
   ],
diff --git a/spec/test-manager.js b/spec/test-manager.js
index 62d33d5..4392b60 100644
--- a/spec/test-manager.js
+++ b/spec/test-manager.js
@@ -1,26 +1,26 @@
 import { expect } from 'chai';
 import { DFPManager } from '../lib';
 
-describe('DFPManager', function adSlot() {
-
-  describe('Targeting arguments', function dfpManagerInteraction() {
+describe('DFPManager', () => {
+  describe('Targeting arguments', () => {
     beforeEach(function beforeEach() {
-      this.argsList1 = {'k': 'yeah'};
-      this.argsList2 = {'k': 'yeah'};
+      this.argsList1 = { k: 'yeah' };
+      this.argsList2 = { k: 'yeah' };
       DFPManager.setTargetingArguments(this.argsList1);
       DFPManager.setTargetingArguments(this.argsList2);
     });
 
     it('Registers global targeting arguments', function registersAdSlot() {
-      expect(DFPManager.getTargetingArguments()).to.contain.keys({ ...this.argsList1, ...this.argsList2});
+      expect(DFPManager.getTargetingArguments()).to.contain.keys(
+        { ...this.argsList1, ...this.argsList2 }
+      );
     });
-
   });
 
-  describe('Creation of ad slots ', function dfpManagerInteraction() {
+  describe('Creation of ad slots ', () => {
     beforeEach(function beforeEach() {
       this.slotProps = {
-        dfpNetworkId: 1000,
+        dfpNetworkId: '1000',
         adUnit: 'foo/bar/baz',
         slotId: 'testElement',
         sizes: [[728, 90]],