Changes

*** [http://msdn.microsoft.com/en-us/library/bb509630%28v=vs.85%29.aspx normalize()]- normalize a vector*** [http://msdn.microsoft.com/en-us/library/bb509594%28v=vs.85%29.aspx dot(,)]- dot product of two vectors of any size*** [http://msdn.microsoft.com/en-us/library/bb509617%28v=vs.85%29.aspx length()]- length of a vector*** [http://msdn.microsoft.com/en-us/library/bb509645%28v=vs.85%29.aspx saturate()] - clamp scalar, vector, or matrix to [0, 1]