pivotal-sprout/sprout-homebrew — pull request #10 by scottmuc (2014-12-01 13:17:30+00:00)
Title: adding head option for formulae install

* references issue #9
* adds a little complexity in the recipe because type check
is performed. I can't see this exploding in scope so don't
feel too bad about the added 'if' statement
* the 'if' statement could check for String and handle the hash
in the 'else' but wanted to explicitly call out the fact
that we're looking for an ImmutableMash
* not sure what's going to happen when version 2 of hub becomes
the normal version so this test is probably brittle