Fix ExpectedCrlfError in Connection

Pull Request #22, merged in commit 449b42e767973c2e9ae5207aaf7a0515ac3a287b, addressed an issue related to ExpectedCrlfError, but I believe another one exists. I think the raise this change fixes was broken before, but before the merge the name was at least correct.

Also, all the tests don't pass for me. Is this expected? Is there anything I can do to help? Any interest in getting Travis CI going? I'm happy to help in anyway I can!