Added int Color constructors
Fix alignments
Remove duplicate code
[Toolkit.Graphics] Fixed compilation after adding additional contructor in Color that accepts ints.
Update README.markdown
Adding proxy functionality in constant buffers (in effects framework) for sharing buffer from multiple effects
Adding Update method for constant buffers ( update a constant buffer without applying a pass )
Move to v4.5.1 framework (VS 2013)
build effects11 using 12.0 toolchain (vs2013)
[SharpDX] Add Equal(ref other) for vector/quaternion/matrix

Equal(ref other) is now also used in == and != operators
[SharpDX] Add Vector/Scalar component-wise addition and subtraction operators/functions
[SharpDX] Protect against zero or negative Sqrt input (in RotationLookAt)
[SharpDX] Remove normalization from quaternion billboard functions and always normalize input in RotationLookAt (as suggested in issue #225)