Added URL title handler for Reddit submissions.

The handler retrieves the comment feed in json and returns submission
score and number of comments with the title. "NSFW" is also
added to the end if over_18 is true in the submission.

Few links for testing:
http://www.reddit.com/r/futurebeats/comments/1d693g/flying_lotus_did_not_say_he_was_going_to_have_a/
http://www.reddit.com/r/futurebeats/comments/1ex61l/boards_of_canada_reach_for_the_dead_tomorrows/
Merge pull request #70 from JaniL/reddithandler

Added URL title handler for Reddit.com submissions.