Major Structure change.

* Moved to Berkshelf.
* Added Gemfile for depandencies.
* Added Vagrant support.
* Cookbook recipes clean-up.
* Removed problematic "admin" user example.
* Epanded and updated documentation.
Added Initial low end nodes support.
Fix typo in the readme
More wise default user name.
Updated the default node with the correct default user.
Code clean-up and refactoring.

* Removed unneeded recipes.
* Added the git recipe needed for drush.