refresh bundles [automated]: https://github.com/scrooloose/syntastic.git @ 5e275c45313cd9a5441343d25c8207d03861fc9d
refresh bundles [automated]: https://github.com/airblade/vim-gitgutter @ fd98657d2f77f01110ef1e1411aeeba73e51e98f
add plugin vim-gitgutter

- shows signs for diff of file indexed in git