Artifact Format

See thread http://forum.vcmi.eu/viewtopic.php?t=558for discussion

Artifact abilities use Bonus Format.

TODO: Combined artifacts identified by string

{
	type: "HERO", \\CREATURE, COMMANDER
	class: "TREASURE", \\MINOR, MAJOR, RELIC, SPECIAL
	slot:	"HEAD", \\SHOULDERS, NECK, RIGHT_HAND, LEFT_HAND, TORSO, RIGHT_RING, LEFT_RING, FEET, MISC1, MISC2, MISC3, MISC4,
		MACH1, MACH2, MACH3, MACH4, SPELLBOOK, MISC5
	value: 12000, //based on ARTRAITS.txt		
	name:
	{
		name: "Big Sword",
		description: "Big sword gived +10 attack to hero",
		event: "On your travel, you stumble upon big sword. You dust it off and stick in your backpack"
	}
	graphics: "BigSword.png",
	bonuses:
	{
		Bonus_1,
		Bonus_2
	}
}