added arduino script for display

128x64Dots Serial/Parallel LCD Model ST7920
http://www.digole.com/images/file/Digole_12864_LCD.pdf

Requires: https://code.google.com/p/u8glib/

Connections: http://www.geeetech.com/wiki/index.php/Graphic_LCD_128x64_STN_LED

People who worked on this:
Joaquin de Andres (xcancerberox@gmail.com)
Juan Ignacio Scarafia (@juaniscarafia)
Gabriel Balaudo (@Ganiserb)