Updated sample
Fixed MapCreator LayerManager
Moved CollisionManager.Update

* Updated _PrepareUpdate() to move collision manager update
  after standard update method for all other objects.
  This allows us to respond to collisions after all
  objects have moved but before next draw.
Fixed Text2d bounds to calculate correctly

#13
Added missing property required by the tests
Added failing tests for TimeSpan
Fixed issue #11 where TimeSpan.Minutes would return the seconds.
Fixed issues based on comments on PR
Added the tests file to the project
Made Graphic2d's only draw children if they're visible

- Also compiled in accepted PR's into the generated endgate.js files

#4
Added tests to verify correctness of Graphic2d children Visible property being used correctly
Fixed Tween to trigger OnChange for all intervals of the tween

#5
Added tests to verify the correctness of how many times OnChange is triggered.
Disposed the MapManager on game dispose, this removes the map scenery canvas.

#12
Added test to verify that game dispose removes all used canvases from the dom
Added return value to the RotateAround function, it used to just return "any".
Updated EndGate version
Removed tweening from collision inspector