Changes in progress to get VO playing.

Conflicts:
	source/scenario1.vwf.yaml
VO!
Fixed some trigger conditions that had the wrong positions in them.
Replace the placeholder intro screens with placeholder intro screens.
Merge pull request #117 from virtual-world-framework/triggers

Triggers
Added second scenario
Fixed success popup not deleting & added scenario2 yaml
Refactored onsceneready
Reworked the way scenarios are started
Removed unused property
Refactored addToInventory
Merge pull request #119 from virtual-world-framework/intro-screens

Replace the placeholder intro screens with placeholder intro screens.
Merge pull request #116 from virtual-world-framework/scenario-2

Scenario 2
Ken McClure: Adding crash pod and platform for the first level start area. Also adding its textures
Ken McClure: Update to .dae file.  Forgot to change "HEIGHTFIELD" to "NORMALMAP"
Added crash pod to scene
Merge pull request #121 from virtual-world-framework/Ken-Art

Added crash pod
Add dust system
Add dust system controller
Allow dust system to follow player