Updates the plugin to make it work with videojs 7. (#10)

* Updates the plugin to make it work with videojs 7.

* Adds an example page.

Stores the player object since due to some reason the  call to `this.player()` returns undefined the second time it is called on the close function.

* Adds a parameter to disable or enable the socials filtering due to the mobile device check.

* Fixes husky warnings.

* Upgrades videojs version on package.json and on travis config file.

* Updates videojs dependency so that it acepts either ^6 || ^7.

* Bumps up the plugin version.

Since this not working anymore with versions 5 and under the version has been numped up to indicate breaking changes.

.travis.yml

@@ -20,8 +20,8 @@ before_script:
   - export DISPLAY=:99.0
   - sh -e /etc/init.d/xvfb start
 env:
-  - VJS=5
   - VJS=6
+  - VJS=7
 addons:
   firefox: latest
   apt:

README.md

@@ -17,8 +17,9 @@ Copying to clipboard is done via [clipboard.js][clipboardjs].
 
 <!-- START doctoc generated TOC please keep comment here to allow auto update -->
 <!-- DON'T EDIT THIS SECTION, INSTEAD RE-RUN doctoc TO UPDATE -->
-## Installation
+- [Version Support](#version-support)
 
+- [Version Support](#version-support)
 - [Installation](#installation)
 - [Usage](#usage)
   - [`<script>` Tag](#script-tag)
@@ -27,6 +28,10 @@ Copying to clipboard is done via [clipboard.js][clipboardjs].
   - [Plugin initialization](#plugin-initialization)
 
 <!-- END doctoc generated TOC please keep comment here to allow auto update -->
+## Version Support
+
+This is an advanced plugin and due to that it works on videojs versions 6+ [see here](https://blog.videojs.com/feature-spotlight-advanced-plugins/).
+
 ## Installation
 
 ```sh
@@ -85,7 +90,7 @@ var shareOptions = {
   image: 'https://dummyimage.com/1200x630',
 
   // required for Facebook and Messenger
-  fbAppId: '12345', 
+  fbAppId: '12345',
   // optional for Facebook
   redirectUri: window.location.href + '#close',