[WIP] Add examples folder with demo files

[Copilot]

Thanks for asking me to work on this. I will get started on it and keep this PR's description up to date as I form a plan and make progress.

---

This section details on the original issue you should resolve

<issue_title>Provide files for the examples</issue_title>
<issue_description>Can I suggest to provide some demos in a 'examples' folder? I had some issues while testing.

The getContents example didn't work for me:

$('#examplePadBasic').pad({'getContents':'exampleGetContents'});

I tried to hide the controls but that didn't work:

$('#examplePadBasic').pad({
  'padId':'test',
  'host'             : 'http://beta.etherpad.org', // the host and port of the Etherpad instance, by default the foundation will host your pads for you
  'baseUrl'          : '/p/', // The base URL of the pads
  'showControls'     : false, // If you want to show controls IE bold, italic, etc.
});    

</issue_description>

Comments on the Issue (you are @copilot in this section)

@JohnMcLear showControls is broken. I have fixed this upstream and I'm waiting on tests/merges to get it done.

re getContents, an example would be useful, please do provide some files for examples :) Thanks!

@JohnMcLear create/use a plugin. @JohnMcLear https://static.etherpad.org