Brewfile: Install some more useful tools
.functions: Make `gi` accept any number of arguments

Closes #367.
Merge branch 'master' of github.com:bricejlin/dotfiles

* 'master' of github.com:bricejlin/dotfiles:
  create shortcut for code folder
  add other paths
  update init preferences
  deleted caskfile/license, edited README
  deleted bin folder
  comment out dropbox alias
add alias / add git info