initial formula for drake, version 0.1.5-SNAPSHOT
locked to drake 0.1.4, pending next release. simplified recipe (courtesy https://github.com/agate/homebrew/commit/1e44ea52dcc54291733e07a86546d0685d93c70b)
added more substantial test
use official release binary url
fix test. yay for ci!
update comment
drake: add 0.1.5 bottle.