Merge pull request #1774 from lovedheart/patch-42

Add itstool.rb

packages/itstool.rb

+require 'package'
+
+class Itstool < Package
+  description 'Translate XML with PO files using W3C Internationalization Tag Set rules'
+  homepage 'http://itstool.org/'
+  version '2.0.4'
+  source_url 'https://github.com/itstool/itstool/archive/2.0.4.tar.gz'
+  source_sha256 '3221bba908eb3c19d3b6f8e195ad706afcfef9d2f552d44e45cd77f622fd6dbc'
+
+  depends_on 'python27'
+
+  def self.install
+    system "pip install --prefix #{CREW_PREFIX} --root #{CREW_DEST_DIR} itstool"
+  end
+end