Squashed 'vim/bundle/nerdtree/' content from commit b0bb781

git-subtree-dir: vim/bundle/nerdtree
git-subtree-split: b0bb781fc73ef40365e4c996a16f04368d64fc9d
Merge commit '9982887fec3e6f81d7fabba8ffa9ae2e366f0529' as 'vim/bundle/nerdtree'