marcmerlin and focalintent WAIT_TIME=50 to allow interrupts without breaking matrix output. (#596)
* WAIT_TIME=50 to allow interrupts without breaking matrix output.

WAIT_TIME set to 5 was too short and FastLED aborted frames too early
and restarted them incorrectly.
(as explained by Daniel Garcia in
https://plus.google.com/communities/109127054924227823508 )

Tested on ESP8266 with 768 LED matrix in both serialized output
and 3x 256 output.

* Update clockless_block_esp8266.h

* Update clockless_esp8266.h
Latest commit dcbf399 Jun 23, 2018