agignore: ignore image files
Update submodule autojump 4bb6dfe...b80c630

* autojump 4bb6dfe...b80c630 (4):
  > Merge branch 'fix_wrappers'
  > update documentation
  > Fix encoding issues.
  > Add Python 2.6 support back.
Update submodule vim/vendor/UltiSnips 3b56e24...b577777

* vim/vendor/UltiSnips 3b56e24...b577777 (2):
  > Merge pull request #123 from lencioni/improve-js-for-snippet
  > Do not use xrange since py3 does not define it.
Update submodule vim/bundle/airline 2b44acf...7a1801e:

* vim/bundle/airline 2b44acf...7a1801e:
  Warn: vim/bundle/airline doesn't contain commit 2b44acf8bb47fa50197ee078866be42110f29c6d
tmux: "bind ^"; visual-content on