Sublime improvements

Many Sublime Text improvements, fixes #59 

Summary:
 * use [Package Control](https://sublime.wbond.net/) for Sublime Text
  * [Chef](https://sublime.wbond.net/packages/Chef) and [Cucumber](https://sublime.wbond.net/packages/Cucumber) syntax packages preinstalled
  * [Terminal](https://sublime.wbond.net/packages/Terminal), [GitGutter](https://sublime.wbond.net/packages/GitGutter), [Shell Turtlestein](https://sublime.wbond.net/packages/Shell%20Turtlestein) and [Ruby Debugger](https://sublime.wbond.net/packages/Ruby%20Debugger) packages preinstalled