Version Control API introduction

This was originally intended to be a BoF session at DrupalCon San Francisco, but after talking with Sam(sdboyer) about it it seems to be a better idea to make a little screencast instead.

So, like I mentioned in the post about the drupalCon SF this is my first attempt to start documenting the 6.x-2.x branch version.

I hope this can help people to get inside the code of the versioncontrol module.

I'm also attaching here the presentation I used in the video.

hint: looks better at fullscreen