Merge pull request #5 from gszymski/master

Added a few Conn shortcuts to Bot interface and BotImpl
 - Conn().HandleFunc
 - Conn().Join
 - Conn().Part
contributors: add gszymski
untappd: remove plugin (parsing out of date)
lib/url: twitter parser improvement, support photo and conversation
new plugin: battleroyale
new plugin: golang to run snippets of code via http://play.golang.org
battleroyale: leaderboard is down currently, skip test