Add Wpf app example image

Add basic WPF app

Add Normal Map support

Extract Shader interface from FaceDrawStrategy

Fix crash when no Texture or Vertex Normals were present in the Obj file

Remove tests of old methods

Refactor FaceDrawStrategy

Refactor

Add ModelView class

Move WireMeshFaceDrawStrategy over to using ViewPort

Add Gouraud Shading

Add Model-View transformation

Implement shading strategy in FaceDrawStrategy

Add Shade Drawing Strategy interface

Update best render image