Added the ASSIMP library

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

Graphics2/shader.hlsl

@@ -0,0 +1,51 @@
+
+cbuffer ConstantBuffer
+{
+	matrix worldViewProj;	// The complete transformation
+	matrix world;			// The world transformation matrix
+	float4 lightVector;     // The directional light's vector
+	float4 lightColour;     // The directional light's colour
+	float4 ambientColour;   // The ambient light's colour
+};
+
+Texture2D Texture;
+SamplerState ss;
+
+struct VertexIn
+{
+	float3 Position : POSITION;
+	float3 Normal   : NORMAL;
+	float2 TexCoord : TEXCOORD;
+};
+
+struct VertexOut
+{
+	float4 Position  : SV_POSITION;
+	float4 Colour	 : COLOUR;
+	float2 TexCoord	 : TEXCOORD;
+};
+
+VertexOut VS(VertexIn vin)
+{
+	VertexOut vout;
+
+	// Transform to homogeneous clip space.
+	vout.Position = mul(worldViewProj, float4(vin.Position, 1.0f));
+
+	// calculate the diffuse light and add it to the ambient light
+	float4 vectorBackToLight = -lightVector;
+	float4 adjustedNormal = normalize(mul(world, float4(vin.Normal, 1.0f)));
+	float diffusebrightness = saturate(dot(adjustedNormal, vectorBackToLight));
+	vout.Colour = saturate(ambientColour + lightColour * diffusebrightness);
+
+	vout.TexCoord = vin.TexCoord;
+
+	return vout;
+}
+
+float4 PS(VertexOut pin) : SV_Target
+{
+	return pin.Colour * Texture.Sample(ss, pin.TexCoord);
+}
+
+