[WIP] SimpleQuests NPC scripting documentation

Variables:
	%executer% = Player name, that executes script.
	%nearest% = Nearest player name.
Types:
	location: encoded location.
	float: number
	integer: number
	float - number without decimal point.
	double: number with double precision.
	boolean: true/false value
	speed: walked blocks per tick, default 0.2, max. 1.0
	range: Range of NPC's pathfinder, default 30
	string: text
Commands:
	Format:
		[command]/[arg1]/[arg2]/[arg3] etc...
	Spawn NPC:
		Command: spawnnpc
		Args: [name of the NPC], [spawn location of NPC]
		Example: spawnnpc/Notch/40.548,69.0,522.752,0.872,-2.445,world
	Enable/disable Invulnerability:
		Command: setInvulnerability
		Args: [boolean]
		Example: setInvulnerability/true
	Set Target of NPC:
		Command: setTarget
		Args: [name of the target player]
		Example: setTarget/ericek111
	Enable/disable collisions with entities:
		Command: setCollisions
		Args: [boolean]
		Example: setCollisions/true
	Enable/disable gravity for NPC:
		Command: setGravity
		Args: [boolean]
		Example: setGravity/true
	Set yaw (angle/azimuth) of NPC:
		Command: setYaw
		Args: [float]
		Example: setYaw/289.3567
	Run pathfinding (move NPC) to specified location:
		Command: pathfindTo
		Args: [location] OR [location]/[speed] OR [location]/[speed]/[range]
	Teleport NPC to location:
		Command: teleportToLoc
		Args: [location]
		Example: teleportToLoc/40.548,69.0,522.752,0.872,-2.445,world
	Teleport NPC to player:
		Command: teleportToPlayer
		Args: [name of the online player]
		Example: teleportToPlayer/ericek111
	Sleep:
		Command: sleep
		Args: [float] - number of ticks.
		Example: sleep/20 - sleep for 1 second (20 MC ticks is 1 real second).
	Send message as NPC:
		Command: chat
		Args: [string]
		Example/Hello! My name is John!