adding zsh-syntax-highlighting
Merge branch 'master' of https://github.com/robbyrussell/oh-my-zsh

* 'master' of https://github.com/robbyrussell/oh-my-zsh:
  debian plugin: ignore alias in sudo/aptitude check
  Add new plugin for homebrew installed version of postgres
  Do not clear tab when calling it with an argument.
  Fixed slow behavior when using GitHub wrappers
  Escape both % and $ in the command line
  virtualenv cleanup: replaces subshell with prompt expansion.
  virtualenvwrapper plugin cleanup
  Update bundler.plugin.zsh
  Update bundler.plugin.zsh
  Update the character used in powerline
  Update README.textile
  fix the open command in linux using xdg-open
  Fixed missing retcode function