Updated readme to use "tpope/vim-rails.git" repository.

README.md

@@ -33,10 +33,10 @@
      Bundle 'tpope/vim-fugitive'
      Bundle 'Lokaltog/vim-easymotion'
      Bundle 'rstacruz/sparkup', {'rtp': 'vim/'}
+     Bundle 'tpope/vim-rails.git'
      " vim-scripts repos
      Bundle 'L9'
      Bundle 'FuzzyFinder'
-     Bundle 'rails.vim'
      " non github repos
      Bundle 'git://git.wincent.com/command-t.git'
      " ...