Added comments to FollowPath2 (W.I.P.  Sorry it's mixed in with the old FollowPath); added resetPathFinder to FollowPath's companion methods.  created new abstract class BTBot to facilitate creation of new bots that will appear in McBot's menu.  Renamed old BTBot to BTBotExperiments.  Removed useless behaviors package.scala.  Refactored PickupItems and GatherWood (formerly huntWood) into their own objects in the behaviors package (TODO: turn them into Node subclasses so resetState() can reset their enclosed variables... OR add a decorator onReset to obviate this need).  Added disclaimer to Behaviors.scala (is mostly experimental/broken).
Renamed huntTest to HuntCreatures and moved it from BTBotExperiments to its own object in the behaviors package.  Consolidated related functions.
Turned the behaviortree.actions package object into the normal object called behaviortree.Actions.
cleaned up HuntCreatures a little.  Created a new McBot bot that hunts mobs and picks up items (BTHuntAndPickup).
added .gitignore