Votes: Like, for people

The plan is to let every-fuckin' body on the open internet vote for every comic once. And then we get to know which comics are cool. 

We'll do this by limiting the votes to IPs. If someone wants to get a bunch of suckers to vote something dumb up, we'll just consider the act of that happening the joke and enjoy it :tada: 

### The Work Process

  * [x] Anger everyone with excessive notifications in IRC (cc/ @skalnik :rage3:)
  * [x] Wire up the front end of the button
  * [ ] Back end route to `POST` to + `$.ajax` plumbing
  * [ ] Handle success/failure of votes on the client (update the counter)
  * [ ] Add the vote count to the `Comic#update` fetcher
  * [ ] Draw the correct vote count on the page initially
  * [ ] Find out a sane way to get remote peers locally and in production (`X-Forwarded-For` or whutever)
  * [ ] Limit the number of votes to one-per-one
  * [ ] A vote-sorted archive page of only comics with votes
  * [ ] Figure out if you're done
  * [ ] :beers:  :heavy_plus_sign:  :cake: