Merge pull request #300 from cstrouse/add-jq

Add package for jq

packages/jq.rb

+require 'package'
+
+class Jq < Package
+  version '1.5' 
+  source_url 'https://github.com/stedolan/jq/releases/download/jq-1.5/jq-1.5.tar.gz' 
+  source_sha1 '6eef3705ac0a322e8aa0521c57ce339671838277' 
+
+  def self.build
+    system "./configure",
+      "--prefix=/usr/local",
+      "--disable-maintainer-mode", # disable make rules and dependencies not useful
+      "--disable-docs"             # there's no support for manpages
+    system "make"
+  end
+
+  def self.install
+    system "make", "DESTDIR=#{CREW_DEST_DIR}", "install"
+  end
+end