Added reverse ninja mode (ajnin mode?).
Added ability to use unshifted numbers for symbols in ajnin mode.
Added ability to omit vowel in ninja mode.
Added jnn mode.
Only allow ninja modes if hoon_ninja exists and is not 0.
Moved ninja mode functionality to ftplugin/hoon.vim
Merge pull request #6 from philipcmonk/master

Added ajnin mode.