add rails bash-completions
Merge branch 'master' of bitbucket.org:engeld/dotfiles

* 'master' of bitbucket.org:engeld/dotfiles:
  remove alias which doesn't work on mac osx
Merge branch 'master' of bitbucket.org:engeld/dotfiles

* 'master' of bitbucket.org:engeld/dotfiles:
  add rails bash-completions