Update repository with the current state of the plugin.

Hi, @melchoyce,

I'm currently working a little bit at the CEUX plugin. As this repo is the official one for the project, but was never used, I think that it's good to start using it to make it easy for people to colaborate with it.

This pull request contains the current code of the plugin (the same at the svn repo). I'll keep making changes at my fork of this repo and updating this repo too.

I refactored the plugin code a little bit... now the plugin "works" on a current post add / edit page. I made some functions to handle with building Content Blocks, refactored some .js code too, etc... I'm currently finishing the **Image** Content Block with *Plupload* integration. The idea is to get as soon as possible a real **working prototype**, that builds the content and prints it at the Front End.

Cheers,

@diegoliv