Support defining multiple user VCS commands with g:ctrlp_user_command
following this format:
let g:ctrlp_user_command = {
\ 'types': {
\ 1: [root_marker_1, listing_command_1],
\ n: [root_marker_n, listing_command_n],
\ },
\ 'fallback': fallback_command
\ }
Check the docs for a working example (:help ctrlp_user_command).
Refs #118
6a9f1e3a46