support to have some square corners with the rest of the corners having the same radius about roundedimageview

[vinc3m1]

Unfortunately not without performance and feature compromises. The library currently depends on this function: [http://developer.android.com/reference/android/graphics/Canvas.html#drawRoundRect(android.graphics.RectF, float, float, android.graphics.Paint)](http://developer.android.com/reference/android/graphics/Canvas.html#drawRoundRect%28android.graphics.RectF, float, float, android.graphics.Paint%29)
Which allows us to have hardware accelerated anti-aliasing with a single draw pass. It wouldn't be hard to write your own drawable that uses one of the other methods like porter-duff xfermode to support some square corners.

[notice501]

I forked your code and make a option that only have bottom or top corners in a easy way.