New in version 1.1.1:
* Added ability to change font size in Settings menu
New in version 1.1:
* Added integration with Barcode Scanner App ZXING
* Added touch gesture
* Touch left area of the screen => Left arrow key
* Touch right area of the screen => Right arrow key
* Touch upper area of the screen => Up arrow key
* Touch lower area of the screen => Down arrow key
* Left swipe => F2 key
* Right swipe => Ctrl-K key
* Up swipe => Call up ZXING app
* Down swipe => Enter key