settings: add color.grep.* to gitconfig


git-svn-id: https://subversion.assembla.com/svn/magicant/settings@310 9a5e03f8-c55e-0410-a490-9d27d325e308
settings: allow :Style w/o argument in vimrc


git-svn-id: https://subversion.assembla.com/svn/magicant/settings@311 9a5e03f8-c55e-0410-a490-9d27d325e308