If using RVM, you'll want to do
rvm use system
Before installing!
yum -y install make ruby ruby-devel vim
mkdir ~/.vim
git clone git://github.com/rbowden91/vimrc.git ~/.vim
ln -s ~/.vim/.vimrc ~/.vimrc
vim +BundleInstall +qall
,n: Toggle NERDTree,t: Show Command-T,w: Remove whitespace at end of lines,g: Toggle UNDO tree,c: Send OCaml code to toplevel using either a motion or visual mode,e: Send the current "block" (between ';;'s) of OCaml code to toplevel,f: Send entire file to OCaml toplevel