Add vim plugins as submodules

Add fugitive
Add Railscasts theme
Add vim-rails
Add vim-commentary
Add vim-endwise
Add vim-eunuch
Add vim-repeat
Add vim-rhubarb
Add vim-vinegar
Add vim-airline
Add vim-rake
Add vim-projectionist
Add vim-bundler
Add vim-javascript
Add vim unite
Add vim-sleuth
Add vim-sensibe
Add vim-surround
Add vim-unimpaired
Add vim-pipe
Add vim-dispatch
Fix LESS
Add jshint command for vim-pipe