Added groonga. groonga is fulltext search engine.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>

* Bump to 0.7.4

Formula/groonga.rb

@@ -0,0 +1,12 @@
+require 'formula'
+
+class Groonga <Formula
+  url 'http://groonga.org/files/groonga/groonga-0.7.4.tar.gz'
+  homepage 'http://groonga.org/'
+  md5 '6c3e2a922a45f76a7c766defce7385fa'
+
+  def install
+    system "./configure", "--prefix=#{prefix}", "--with-zlib"
+    system "make install"
+  end
+end