remove go install

module is still in default boxen modules (why??) but brew does a much
better job of installing this.

since the boxen go module didn’t have uninstall directives, requires me
to manually uninstall goenv on all machines.
style: capitalize HOME everywhere for readability
don't force install ST2 config anymore
list a few more atom modules for future
reorganize personal manifest a bit

just changing order around to be slightly more readable
no longer automatically run OSX software update

apple has too much of a history of pushing updates that break stuff, so
I want to be able to wait a week or so to make sure its safe
add a few more homebrew packages i use
move VM stuff to brew cask as well
dash is awesome