Updated cleverbot to URL encode request query string
Updated cleverbot to URL encode request query string

Noticed an issue where come chat requests with the clever bot would cause cleverbot.com to throw a 400 error. Traced it down to the request URL being malformed when certain characters were present in the bots last response. Fixed by urlencoding the query string parameters.
makiftasova/hangoutsbot,cd334/hangoutsbot,jhonnyam123/hangoutsbot