Changes
/* Components */
* CD74HC4017 decade counter, $0.4776 @ 50: http://search.digikey.com/us/en/products/CD74HC4017E/296-25989-5-ND/480317
* CR2032 holder, $0.4968 @ 100: http://search.digikey.com/us/en/products/3003/3003K-ND/227448
* PCB 5cm x 10cm, $1.498 @ 50: http://www.seeedstudio.com/depot/fusion-pcb-service-p-835.html