adding queequeg formula

queequeg is python script to perform grammar check on text files.

I don't know how to delete these 2 hugly unusefull commits from my pull request to have a cleaner one... If someone can tell me, i'll do it.

I tried uninstalling python-cdb with pip and adding:
   resource "python-cdb" do
     url "http://pilcrow.madison.wi.us/python-cdb/python-cdb-0.32.tar.gz"
     sha1 "b2a109d601f36cf6a829992461a6c7db61022c45"
   end

...

     ENV.refurbish_args

     ENV["PYTHONPATH"] = libexec/"vendor/lib/python2.7/site-packages"
     ENV.prepend_create_path "PYTHONPATH", libexec/"lib/python2.7/site-packages"

     resource("python-cdb").stage { Language::Python.setup_install "python", libexec/"vendor" }

     bin.env_script_all_files(libexec/"bin", :PYTHONPATH => ENV["PYTHONPATH"])
but this gives a segfault after the grammar checking ends in brew test queequeg.
By the way queequeg will works without python-cdb if not installed, it will just be slower.

An other issue is if python-cdb is not installed, it create a dict.txt instead of the dict.cdb, thus in my install list files i give to bin.install I have to check which is the good one...