Squashed '.vim/bundle/vim-abolish/' content from commit 665bed7

git-subtree-dir: .vim/bundle/vim-abolish
git-subtree-split: 665bed73aded4049a6d9bdaf3c87ee69af983abb
Merge commit 'ecf2f65c66552e7ea90fbed206f4d5a5117e54c5' as '.vim/bundle/vim-abolish'
Add vim-abolish to gitignore