By convention, Ruby code is indented using two spaces ( ) per-level.
The code used tabs (\t) previously and therefore wasn't idiomatic.
This change updates the indenting to use two spaces.
This change adds support for --HEAD builds to the Homebrew formula. It
defines a conditional dependency on Maven and builds the -cli project
during install. The location to install from is abstracted out so
that code is identical regardless of whether the build is --HEAD or
mainline.
