Timing is everything
Timing is everything

In the playTune test there was just 4ms of wiggle room for the tune to
finish. In Travis this failed about half the time (only 3 calls were
made on freqSpy). I added 20ms of wiggle room to the timeout.

Also in toneStopsAfterTime the test was inermittently firing before the
tone had finished playing. I added 10 ms of wiggle room there.

kod3r/johnny-five,joelunmsm2003/arduino,cumbreras/rv,AnnaGerber/johnny-five,kod3r/johnny-five