Merge remote-tracking branch 'remotes/origin/async'

Author: Links2004

README.md

@@ -18,7 +18,8 @@ a WebSocket Server and Client for Arduino based on RFC6455.
  - max input length is limited to the ram size and the ```WEBSOCKETS_MAX_DATA_SIZE``` define
  - max output length has no limit (the hardware is the limit)
  - Client send big frames with mask 0x00000000 (on AVR all frames)
-
+ - Functions called from within the context of the websocket loop might not honor `yield()` and/or `delay()`.  See [this issue](https://github.com/Links2004/arduinoWebSockets/issues/58#issuecomment-192376395) for more info and a potential workaround.
+ - 
 ##### Supported Hardware #####
  - ESP8266 [Arduino for ESP8266](https://github.com/Links2004/Arduino)
  - ESP31B