Add csvkit package

packages/csvkit.rb

+require 'package'
+
+class Csvkit < Package
+  description 'A suite of utilities for converting to and working with CSV, the king of tabular file formats.'
+  homepage 'http://csvkit.rtfd.org/'
+  version '1.0.2'
+  source_url 'https://github.com/wireservice/csvkit/archive/1.0.2.tar.gz'
+  source_sha256 '35c8c7c699573bec47cbd3576240cc9b444d35f309386f8030340bc50315cdec'
+
+  binary_url ({
+  })
+  binary_sha256 ({
+  })
+
+  depends_on 'python27'
+
+  def self.install
+    system "yes | pip install setuptools"
+    system "pip install --prefix #{CREW_PREFIX} --root #{CREW_DEST_DIR} -r requirements-py2.txt -r requirements-py3.txt csvkit"
+    system "yes | pip uninstall setuptools"
+  end
+end