Version 0.0.3 released

Change log:

0.0.3 Changes in JVM: a couple of bugs were fixed.

Changes to java classes:
1) Screen class has been updated with functions related to numeric keyboard display.
2) TextBox, NumericBox, Button classes have been added.

A demo SD card image has been added, run jvm_lpc2939\Debug\demo.bat to see demo application.