Fast tapping on take picture button throws exception

[addyu]

Just need a try, catch block in takePhoto method of CameraCameraController to solve this.

void takePhoto() async {
    try {
      final file = await _controller.takePicture();

      onPath(file.path);
    } catch (e) {}
}

[alexaniko88]

Any update here? We have the same problem.

[addyu]

Created a PR #78