Fixes #8136: Add plugin documentation and updated rake tasks.

>For any custom or third party modules that you require to be loaded, ensure the following is defined somewhere within your JavaScript (we recommend adding it to the top of your mymodulename.module.js file or in a separate mymodulename-bootstrap.js file):

In order to add third party or custom AngularJS modules, add the following to your the top of your `modulename.module.js` file or in a separate `mymodulename-bootstrap.js` file):