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Merge branch 'master' of github.com:marcmerlin/Neopixel-IR

Added power saving for ESP8266 plus new demos.

Update README.md

Added flash demo, made converge run faster, other small tweaks.

Fixed a few colors.

Added missing color buttons from remote and support in code.

Added 2 FastLED inspired demos + fixes.

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New README.

Added vim files.

Added better comments + license.

Added ESP32 support.

Added ESP8266 ws2812_i2s neopixel driver (better than fastled).

Added ESP8266 support.