Added Support for RN 0.60.0 (#321)

Added Support for RN 0.60.0

Author: cpojer

android/src/main/java/com/cmcewen/blurview/BlurringView.java

@@ -7,10 +7,10 @@
 import android.graphics.Canvas;
 import android.graphics.Color;
 import android.graphics.drawable.ColorDrawable;
-import android.support.v8.renderscript.Allocation;
-import android.support.v8.renderscript.Element;
-import android.support.v8.renderscript.RenderScript;
-import android.support.v8.renderscript.ScriptIntrinsicBlur;
+import android.renderscript.Allocation;
+import android.renderscript.Element;
+import android.renderscript.RenderScript;
+import android.renderscript.ScriptIntrinsicBlur;
 import android.util.AttributeSet;
 import android.view.View;