[iTerm] Update settings
[vim] Improve vimrc comment
[vim] Enable faster screen redraw
[vim] Configure Tagbar
[Heroku] Set PATH for Heroku toolbelt
[vim] Don't use autoindent

Prefer filetype-based indenting, or use the shiftwidth and softtabstop
settings above.
[vim] Remove tab settings

Part of an experiment to rely on filetype-based indentation. These
settings were seemingly conflicting with indentation set by plugins.
[vim] Replace deprecated Go plugins with vim-go

The vim plugins in `$GOROOT/misc/vim` were removed from Go; use the
`faith/vim-go` plugin instead which provides the same functionality and
more.

See also:
http://grokbase.com/p/gg/golang-nuts/1485vxn3t7/go-nuts-where-did-goroot-misc-vim-go
[vim] Sort vundle plugins alphabetically