Create a vote feature

[badBlackShark]

A feature to vote for something through the bot would be nice. A call could like like this: .openVote <thing_to_vote_for> <options> <timeframe>. The vote should automatically close after <timeframe>.
A nice way to tell apart <thing_to_vote_for> and <timeframe> can be loosely copied from the reminder system.
Telling <options> apart from <thing_to_vote_for> is a little tricky. A system could be created to add options to an existing poll (possibly via a generated ID), however I would personally prefer a delimiter in the command call, e.g. |.
After <timeframe> is over, the poll should be automatically closed, and the winning option should be announced. In case of a tie, I don't think a tiebreaker should be introduced. Just announce a tie between the tied options.