New formula grails.

Grails is a high-productivity, open-source, web framework based on the Groovy language that embraces the coding by convention paradigm.

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

Formula/grails.rb

@@ -0,0 +1,13 @@
+require 'formula'
+
+class Grails <Formula
+  url 'http://dist.codehaus.org/grails/grails-1.2.1.zip'
+  homepage 'http://grails.org'
+  version '1.2.1'
+  md5 'd82553956c8249906d247172cfea9e55'
+
+  def install
+    prefix.install Dir['*']
+    FileUtils.rm_f Dir["#{bin}/*.bat"]
+  end
+end