Added the ASSIMP library

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

Graphics2/Renderer.h

@@ -0,0 +1,13 @@
+#pragma once
+
+class Renderer
+{
+public:
+	Renderer() {}
+	virtual ~Renderer() {}
+
+	virtual bool Initialise() = 0;
+	virtual void Render() = 0;
+	virtual void Shutdown() {};
+};
+