MeetBot Vote Function for MeetBot

For 0.1.5 MeetBot should have a Vote function. Example Usage: 01:24 < MTecknology> #vote Build new software 01:24 < MeetBot> Please vote on: Build new software. 01:24 < MeetBot> Public votes can be registered by saying +1/-1/+0 in the channel, private votes by messaging the channel followed by +1/-1/+0 to MeetBot...