List TODO items. Found here: http://stackoverflow.com/questions/4106137/manage-todo-lots-of-files-with-vim#answer-4106211
# Grep for the phrase 'TODO' in SCSS files (simply omit everything
# after the last star to search all file types. The 'j' option stops
# the cursor from automatically jumping to the first instance.
:vimgrep TODO/j **/*.scss
# Open a pane showing all instances.
:cw