cheat sheets.

to get direct access from vim to your cheat-sheets add something like this to 
your .vimrc
map <F3> :!cheat<SPACE>

or

com -nargs=* Cheat :r ! cheat <args>

which lets you :Cheat sheet


Alternatively, you can install the Cheat vim plugin:
http://vim.sourceforge.net/scripts/script.php?script_id=2015

which, besides offering the :Cheat command it also has tab completion for 
cheat sheets names, the <leader>C shortcut to the :Cheat command as well 
as searching for a cheat sheet based on the current keyword (e.g. if the 
cursor is on a word like "ambition", pressing <leader>ch will bring the 
ambition cheatsheet).


wonderful support for ruby within vim is available after
$ sudo gem install vim-ruby
just follow the instructions afterwards