brew create http://example.com/foo-0.1.tar.gz

https://github.com/Homebrew/homebrew/blob/master/share/doc/homebrew/Formula-Cookbook.md#formula-cookbook

assert(this.ary.indexOf(zero) === two)

def install
  system "./configure", "--prefix=#{prefix}", "--disable-debug", "--disable-dependency-tracking"
  system "make", "install"
  cd "build/cmake"
  mv "a", "b"
end