add sparkup plugin
remove powerline plugin
add airline plugin
add tabline plugin
configure airline plugin
add gitgutter and matchit plugins
add powerline style
add Dash support to vim
comment out the shell to use

The -i flag made vim stop when executing an external command. -c should
fix  that but commenting it out didn't break anything. More info:
http://superuser.com/questions/646217/vim-process-stops-after-executing-an-external-command
add JS functions
add dash configuration