Updated Decoupling Capacitors

Updated the decoupling capacitors and consolidated C2-C5 into C2. One
4.7uF cap should be enough to ensure that the voltage drop resulting
from all segments off to all segments on remains less than 1 V while the
power supply compensates. C1 decouples U1, which has a maximum clock
frequency of 30 MHz, but will be operating well under that for most
applications. One standard 0.1uF cap on the Vcc rail should be enough.