[vim] added go plugin
[vim] added function to improve fullscreen mode
Merge branch 'master' of github.com:masukomi/masuconfigs

* 'master' of github.com:masukomi/masuconfigs:
  [vim] cleaned up plugin section of .vimrc
  [vim] comment out some plugins and improved airline config
  [bash] export TERM='xterm-256color'
  [vim] removed vim-gitgutter submodule
  [vim] removed vim-endwise submodule
  [vim] removed vim-coffee-script submodule
  [vim] removed tabular submodule
  [vim] removedf vim-fugitive submodule
  externalized aspects of .gitconfig
  switched font in .vimrc
  ... merging in changes from upstream and stash
  [bash] added GOPATH to .bashrc
  [ruby] added require_dir function to .irbrc
  added enca to system_setup and sorted brew libs
  Revert "[vim] added cdiff file recognition"

Conflicts:
	.vimrc
[.bashrc] changed bash prompt