RemoteCookbooks are compared using set notation, this requires you to
implement #eql? and #hash for appropriate behavior

Without this, if you save a full cache then restart the server, it will
rebuild the cache as if it were empty (removing all existing items on
the first pass through).
the methods are IN the class
Merge pull request #50 from RiotGames/fix_cache_loading_diff

RemoteCookbooks are compared using set notation, this requires you to