Install and update vim plugins using pathogen from the command line.
vim-bundle install tpope/vim-rails
vim-bundle update scrooloose/nerdtree
vim-bundle list
Both install and update will take a github user followed by the repository
name and install the master of that git repo into ~/.vim/bundle/. If you
leave off the github username it will use the github mirror of vim-scripts'
username.
Move vim-bundle into your PATH. Personally I add $HOME/.bin to my
path and keep
vim-bundle inside the .bin folder.