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:
     # Write a wrapper for qq
     ("qq").write <<-EOF
     #!/bin/sh
     #{libexec}/qq $*
 EOF
     system "chmod", "a+x", (bin/"qq")

But can't get an executable file. It's always read only.

XL.