doc fix + loadGmaps return promise

[Perlover]

It's cumulative commit of my two previous pull requests: #4 + #1 + new the feature:

Now the loadGmaps return promise fulfilled with true as loaded successfully and false as not loaded. I added examples for this in README.

I didn't test it but i will soon. Please review this and if you will think that everything is ok please merge it ;-)

[Perlover]

I only forgot to change package.json for new version
If you will accept changes please change there the version number ;-)

[Perlover]

I try to test in my dev project but i cannot run even your original module

I am doing:

1. Cloned your project without my patches

2. inside module dir i did:

npm run build
npm link
cd ~/my-project
npm link vue-geo-suggest
# nuxt
npm run dev

3. I got errors in console when my component does import { GeoSuggest, loadGmaps } from 'vue-geo-suggest'

 ERROR  Failed to compile with 1 errors                                                                                                                                                                                                                                                             friendly-errors 15:18:22


 ERROR  in /home/user/tmp/orig-get-suggest/vue-geo-suggest/dist/vue-geo-suggest.esm.js                                                                                                                                                                                                          friendly-errors 15:18:22

Module build failed (from ./node_modules/eslint-loader/index.js):                                                                                                                                                                                                                                   friendly-errors 15:18:22
Error: Failed to load plugin 'prettier' declared in '../../tmp/orig-get-suggest/vue-geo-suggest/.eslintrc.js » @vue/eslint-config-prettier': Cannot find module 'eslint-plugin-prettier'
Require stack:
- /home/user/src/my-project/__placeholder__.js
    at Function.Module._resolveFilename (internal/modules/cjs/loader.js:980:15)
    at Function.Module._resolveFilename (/home/user/src/my-project/node_modules/module-alias/index.js:49:29)
    at Function.resolve (internal/modules/cjs/helpers.js:83:19)
    at Object.resolve (/home/user/src/my-project/node_modules/eslint/lib/shared/relative-module-resolver.js:44:50)
    at ConfigArrayFactory._loadPlugin (/home/user/src/my-project/node_modules/eslint/lib/cli-engine/config-array-factory.js:841:39)
    at /home/user/src/my-project/node_modules/eslint/lib/cli-engine/config-array-factory.js:730:33
    at Array.reduce (<anonymous>)
    at ConfigArrayFactory._loadPlugins (/home/user/src/my-project/node_modules/eslint/lib/cli-engine/config-array-factory.js:726:22)
    at ConfigArrayFactory._normalizeObjectConfigDataBody (/home/user/src/my-project/node_modules/eslint/lib/cli-engine/config-array-factory.js:552:32)
    at _normalizeObjectConfigDataBody.next (<anonymous>)
    at ConfigArrayFactory._normalizeObjectConfigData (/home/user/src/my-project/node_modules/eslint/lib/cli-engine/config-array-factory.js:491:20)
    at _normalizeObjectConfigData.next (<anonymous>)
    at ConfigArrayFactory._normalizeObjectConfigDataBody (/home/user/src/my-project/node_modules/eslint/lib/cli-engine/config-array-factory.js:545:25)
    at _normalizeObjectConfigDataBody.next (<anonymous>)
    at ConfigArrayFactory._normalizeObjectConfigData (/home/user/src/my-project/node_modules/eslint/lib/cli-engine/config-array-factory.js:491:20)
    at _normalizeObjectConfigData.next (<anonymous>)

Can you help to me? :)

P.S. I even did all recommended commads from your Project setup for contributing section from README - same error.

[Perlover]

I was able to install your module from the repository and run without errors in this way:

1. clone
2. inside from repo dir: npm pack
3. from my project: npm i ~/module-repo/vue-geo-suggest-1.0.2.tgz

Soon i will test my changes

[Perlover]

I can't get my patches to work. So far the problem is that I added async / await. Because of this, dist/* files were not built. After I added rollup-plugin-nodent plugin for rollup and successfully built and installed the module. But a message appears in the browser after this: TypeError: "(intermediate value).$asyncbind is not a function"

[Perlover]

I did final changes and i tested in my project promise of loadGmaps - there everything works
But i see some understable by me Travis errors after last commit...