Game.cs moved to root namespace. Input.cs moved to Engine namespace.

This makes sure that the user doesnt have to include Core namespace at all.
The standard three using strings should mostly be
using Nausea;
using Nausea.Core;
using OpenTK;
lets keep it this way.
CompromisingVertexList moved to structure changed event.
Refactoring
Added camera functionality
Improved Camera
Started working on Text printing