#1 - June 4, 2013, 12:40 a.m.
Not included in the docs yet, I will try to update them later this week.
Right now it was done the easiest way possible so the format is NOT like achievements. It should be a direct match to what you see on someone's public statistic page:
http://us.battle.net/wow/en/character/zangarmarsh/Ulminia/statistic
Let me know if there are bugs or anything like that.