Improve attribute processing, docs and phpunit configuration

.gitignore

@@ -1,2 +1,150 @@
-/vendor/
+# Based on https://github.com/github/gitignore/tree/master/Global
+
+################################################################################
+#
+# Ignore all dot-files and dot-folders, except .htaccess and .gitignore
+#
+################################################################################
+.*
+!/.gitignore
+!/.htaccess
+
+################################################################################
+#
+# JetBrains IDEs: IntelliJ, RubyMine, PhpStorm, AppCode, PyCharm, CLion
+#
+################################################################################
+*.iml
 .idea/
+
+## File-based project format:
+*.ipr
+*.iws
+
+# Plugin-specific files:
+
+# IntelliJ
+/out/
+
+# mpeltonen/sbt-idea plugin
+.idea_modules/
+
+# JIRA plugin
+atlassian-ide-plugin.xml
+
+# Crashlytics plugin (for Android Studio and IntelliJ)
+com_crashlytics_export_strings.xml
+crashlytics.properties
+crashlytics-build.properties
+
+################################################################################
+#
+# Netbeans
+#
+################################################################################
+
+nbproject/
+build/
+nbbuild/
+dist/
+nbdist/
+nbactions.xml
+nb-configuration.xml
+.nb-gradle/
+
+################################################################################
+#
+# Windows OS
+#
+################################################################################
+
+# Windows image file caches
+Thumbs.db
+ehthumbs.db
+
+# Folder config file
+Desktop.ini
+
+# Recycle Bin used on file shares
+$RECYCLE.BIN/
+
+# Windows Installer files
+*.cab
+*.msi
+*.msm
+*.msp
+
+# Windows shortcuts
+*.lnk
+
+################################################################################
+#
+# Notepad++
+#
+################################################################################
+
+*.bak
+
+################################################################################
+#
+# Vagrant
+#
+################################################################################
+
+.vagrant/
+
+################################################################################
+#
+# TortoiseGit
+#
+################################################################################
+
+# Project-level settings
+/.tgitconfig
+
+################################################################################
+#
+# NodeJS
+#
+################################################################################
+
+# Logs
+logs
+*.log
+
+# Runtime data
+pids
+*.pid
+*.seed
+
+# Directory for instrumented libs generated by jscoverage/JSCover
+lib-cov
+
+# Coverage directory used by tools like istanbul
+coverage
+
+# Grunt intermediate storage (http://gruntjs.com/creating-plugins#storing-task-files)
+.grunt
+
+# node-waf configuration
+.lock-wscript
+
+# Compiled binary addons (http://nodejs.org/api/addons.html)
+build/Release
+
+# Dependency directory
+# https://docs.npmjs.com/misc/faq#should-i-check-my-node-modules-folder-into-git
+node_modules
+
+################################################################################
+#
+# Composer
+#
+################################################################################
+
+composer.phar
+vendor/
+
+# Commit your application's lock file http://getcomposer.org/doc/01-basic-usage.md#composer-lock-the-lock-file
+# You may choose to ignore a library lock file http://getcomposer.org/doc/02-libraries.md#lock-file
+# composer.lock

README.md

@@ -1,6 +1,7 @@
 # HtmlElement
 
-This package allows you to easily create HTML elements from PHP. It's inspired by [David Walsh's blogpost](https://davidwalsh.name/create-html-elements-php-htmlelement-class) but further improved.
+This package allows you to easily create HTML elements from PHP. It's inspired by 
+[David Walsh's blogpost](https://davidwalsh.name/create-html-elements-php-htmlelement-class) but further improved.
 
 ```$php
 // Create new html element with attribute name
@@ -59,20 +60,33 @@ $containerElement->inject($rowElement);
 
 The text and attributes can also be added, which merges with existing text or attributes.
 
+## Methods
+
+* `getTag` or `setTag` to request or change the tag.
+* `getAttributes` or `getAttribute(attribute)` to retrieve all attributes with their values or one attributes with its 
+value
+* `setAttributes` or `setAttribute(attribute, value)` to manipulate all attributes or just one.
+* `addAttributeValue` adds a value to an attributes.
+* `removeAttributes` or `removeAttribute(attribute)` to remove all attributes or just one.
+* `removeAttributeValue(attribute, value)` to remove one value from a attribute.
+* `getText`, `addText` or `setText` to retrieve, add or set the inner text.
+* `inject` to inject a htmlElement into the current htmlElement.
+* `generate` generates the htmlElement and returns its string representation.
+* `output` echos the result of `generate`.
+
 ## Tests
 
 Full code coverage unit tests are available in the `tests` folder. Run via phpunit:
 
-`vendor\bin\phpunit tests`
-
-Or if you are interested in the (html) coverage report:
+`vendor\bin\phpunit`
 
-`vendor\bin\phpunit tests --coverage-html report --whitelist src`
+By default a coverage report will be generated in the `build/coverage` folder.
 
 ## Contribution
 
-Any contribution is welcome, but it should be fully tested, meet the PSR-2 standard and please create one pull request per feature. In exchange you will be credited as contributor on this page.
+Any contribution is welcome, but it should be fully tested, meet the PSR-2 standard and please create one pull request 
+per feature. In exchange you will be credited as contributor on this page.
 
 ## License
 
-This package is open-sourced software licensed under the [MIT license](http://opensource.org/licenses/MIT)
+This package is open-sourced software licensed under the [MIT license](http://opensource.org/licenses/MIT)