Adds proxy for creating a new scaled bitmap with transformation

<code>Bitmap.createBitmap(Bitmap source, int x, int y, int width, int height, Matrix m, boolean filter)</code>

https://developer.android.com/reference/android/graphics/Bitmap.html#createBitmap(android.graphics.Bitmap, int, int, int, int, android.graphics.Matrix, boolean)
Merge pull request #1 from howaboutwe/shadow-bitmap-scale-trasnform

Adds proxy for creating a new scaled bitmap with transformation