Add Vundle, some bundles, ipython + git shortcuts
Add Vundle, some bundles, ipython + git shortcuts

- [x] add vim bundle 'vim-syntastic/syntastic'
- [x] add vim bundle 'nvie/vim-flake8'
- [x] add vim bundle 'scrooloose/nerdtree'
- [x] add vim bundle 'tpope/vim-fugitive'
- [x] add a bunch of g prefix git commands
- [x] add gi prefix interactive session bindings
      for ipython
- [x] add NERDTree toggle to gn

stefco/dotfiles,stefco/dotfiles,stefco/dotfiles