[0222] Added equipment for creature 9237

* Added missing equipment for NPC 9237 (War Master Voone)
Source: http://www.wowhead.com/npc=9237#screenshots
Thanks Stan84 for pointing and fixing, this closes #79
[0223] Added root and snare immunities to creature 13021

* Properly added snare (1024) and root (64) immunity mask to creature
13021 (Warpwood Crusher)
  Thanks titarion for pointing
  Source:
http://www.wowhead.com/npc=13021#comments