More Geometric Primitives (Cone, Tetrahedron, Octahedron, Dodecahedron, Icosahedron)

git-svn-id: https://directxtk.svn.codeplex.com/svn@28163 937343c3-697a-4e39-b5c6-83b50a1b7d63
DirectXTK: May 30, 2013 release

git-svn-id: https://directxtk.svn.codeplex.com/svn@28184 937343c3-697a-4e39-b5c6-83b50a1b7d63
Added error check to SaveWIC functions if requested optional targetFormat is not supported by the WIC codec

git-svn-id: https://directxtk.svn.codeplex.com/svn@28235 937343c3-697a-4e39-b5c6-83b50a1b7d63