Various changes:
  * Moved actual dotfiles to be copied into dotfiles/ subfolder
  * No longer automatically copy all dotfiles on every login (instead run the update script in the root of the repo)
  * Change prompt to color tags yellow
  * Moved setting of PATH into .bash_profile
  * Moved config of directories and usernames into .bash_profile
  * Removed Sublime Text 2 and Textmate from editors