Updated Holy Power for Legion

Hide the holy power module when not in Retribution spec in 7.0

modules/HolyPower.lua

@@ -27,6 +27,9 @@ function HolyPower.prototype:init()
 	self.numericColor = "HolyPowerNumeric"
 	self.unitPower = SPELL_POWER_HOLY_POWER
 	self.minLevel = PALADINPOWERBAR_SHOW_LEVEL
+	if IceHUD.WowVer >= 70000 then
+		self.requiredSpec = 3
+	end
 	self.bTreatEmptyAsFull = true
 	self.unit = "player"
 	self.numRunes = 5