Added the ASSIMP library

Added the files provided for the tutorial
Added the SplitMeshNode and SubMeshNode classes

Graphics2/SceneNode.h

@@ -23,6 +23,8 @@ public:
 	virtual void Render() = 0;
 	virtual void Shutdown() = 0;
 
+	virtual void DoTestUpdate(float inputTest) { _testInt = inputTest; }
+
 	void SetWorldTransform(FXMMATRIX& worldTransformation) { XMStoreFloat4x4(&_worldTransformation, worldTransformation); }
 		
 	// Although only required in the composite class, these are provided
@@ -35,5 +37,6 @@ protected:
 	XMFLOAT4X4			_worldTransformation;
 	XMFLOAT4X4			_combinedWorldTransformation;
 	wstring				_name;
+	float _testInt = 0.0f;
 };