implemented basic camera
object-world matrix support
added new platform unspecific vector4
added it to the project >.<
removed DirectXMath for new Vector4 and Matrix4

and spent waaaaaaaay too long debugging the way that the camera and
perspective matrices work in a left-handed system.
Merge pull request #8 from 5-second-rule/camera-view

Added Camera and removed DirectXMath
merged master in