Zoom feature & 4k video

1. Support set zoom (pinch to zoom is also supported)
2. Video size up to 3840 x 1920 (4K UHD)
3. SimpleOnEventListener is added for convenient

The image/video's orientation

Save image/video as per the device orientation

Remove logs

1.0.1

Update README

First release

1.0.0

Release 1.0.0