zsh: Update rvm's ruby version to 2.0.0, add rvm to path

Add:
 * rvm to path

Update:
 * rvm's ruby version to 2.0.0
Add concept of super_user install, minor changes to fonts/prezto/vundle

Add:
 * The concept of the super_user argument to the installer
 * Conditions for powerline fonts to be installed (Ruby and !super_user)

Fix:
 * The shell change and the vim bundle installs to be within their
   conditions
Add OSX configurations, change install order and run command

Add:
 * OSX configuration script to be used in install

Change:
 * Install order so that all file/dir symlinking is done first
 * Run command to be system (works better for the OSX configuration file
Add Ruby rvm to installer
Add homebrew to installer, add initial brew installs