Added V2

V1 works, but time drifts. V2 is for a Teensy 3.0 with crystal and the
Time library. This is the first, working version, before adding any
mode options.
enhancements to V2

added color scheme selection and averaging of overlapping digits
bells and whistles added

included faceMode to show minute marks, hourChime to add animation at
the hour, and the hour hand now moves incrementally