[vim] Add NeoBundle and some plugins
[vim] Add config for unite.vim
[vim] Add vim-rails
[vim] Add keys for unite-rails
[vim] Add vim-fugitive & gitv plugin
[vim] Add keys for vim-fugitive
[vim] Add vim-indent-guides plugin
[vim] Add comment(unite-colorscheme & some colorschemes)
[vim] Add configs for vim-indent-guides