Squashed '.vim/bundle/vim-tmux-navigator/' content from commit d25c7eb

git-subtree-dir: .vim/bundle/vim-tmux-navigator
git-subtree-split: d25c7ebb65a0ca3058d075158ce1b6605c954c82
Merge commit '73c45996527e7d67df2e08eeaf49cdd97960ddd5' as '.vim/bundle/vim-tmux-navigator'
Add vim-tmux-navigator to gitignore