New commit message alias: cmw for "quick & dirty" WIP commits

dotfiles/git-universe/before.gitconfig

   cma = commit --amend
   cmt = !sh -c \
         'git commit --message=\"$(~/.git-universe/bin/findcat msg_typo)\"'
+  cmw = !sh -c \
+        'git commit --message=\"$(~/.git-universe/bin/findcat msg_wip)\"'
   co = checkout
   com = checkout master
   cp = cherry-pick

dotfiles/git-universe/default/msg_wip.example

+WIP