Updates to the code for picking up objects with the wand:
- additional keyboard control for simulator mode:
  Shift: translate X/Y
  Ctrl: translate X/Z
  Alt: rotate Z (roll)
  default: rotate X/Y (pitch and yaw)

picking up an object reparents it to the wand.  dropping it unparents (returns to its previous parent)
pick up/drop is a toggle: Button1 (X on the controller), click once to grab, click again to drop

added a rigidbody collider to the objects, so when you release them they fall
added a plane collider under the floor
Merge branch 'master' of https://github.com/rpilm/LostManuscript

Conflicts:
	Assets/_Scenes/TeahouseV4.unity
	Assets/_Scenes/startDemo.unity