created 15/22 prop prefabs with collision and put in a new folder called UNIQUES, which will contain unique Environment structures that are either scripted or not tileable.
Made a destructable script which should work for most objects including tiles.  We just put it on a prefab then set the stats in the inspector and the damage threshold.  It also has slots for up to 8 particle effects but still needs sounds put in (waiting for sfx).  Added a temp broken pipe prefab that will be changed when the model is done.  Also made a steam particle effect though it could use some work.
Merge branch 'refs/heads/Levels' into alex

Conflicts:
	Assets/Standard Assets/Water (Basic)/Sources/Materials/Daylight Simple Water.mat
	Assets/Standard Assets/Water (Basic)/Sources/Materials/Nighttime Simple Water.mat
Merge branch 'alex' of https://github.com/AlexHayton/UnityTestProject2 into alex
Fixing the UseHandler and some compiler errors