[New Plugins]
1. vim-rails
2. NERDTree
3. vim-nerdtree-tabs

[Turn on]
smarttab
ttyfast
wildmenu
showtabline=2 (always show tab)

[Hotkeys]
1. <F7> and <F8> to switch tabs
2. <leader>v to open .vimrc
3. <F2> to toggle NERDTree

[M]
map leader key from ',' to 'm'
minor change