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.

Yes this is possible, but the way I commited it, it won't work if python-cdb is not there (in that case dict.cdb becomes dict.txt)