Merge pull request cats-oss#171 from ilfuriano/master

add flip options to setRotation

Author: wasabeef

library/src/jp/co/cyberagent/android/gpuimage/GPUImage.java

@@ -201,6 +201,15 @@ public void setRotation(Rotation rotation) {
         mRenderer.setRotation(rotation);
     }
 
+    /**
+     * Sets the rotation of the displayed image with flip options.
+     *
+     * @param rotation new rotation
+     */
+    public void setRotation(Rotation rotation, boolean flipHorizontal, boolean flipVertical) {
+        mRenderer.setRotation(rotation, flipHorizontal, flipVertical);
+    }
+
     /**
      * Deletes the current image.
      */