Complete guide to ActsAsVotable

Episode source code: https://github.com/corsego/75-acts-as-votable-revised/commit/9b315211f4f5d53b2453b0a0296a1c551d3c3c2b
Some code clean up after all the hard work: https://github.com/corsego/75-acts-as-votable-revised/commit/4f5feac95557393dcbb435da4b157e4f7b7e5ee5
Gem ActsAsVotable: https://github.com/ryanto/acts_as_votable