Added change to feature list.

README.md

@@ -45,6 +45,7 @@ Features:
 *   Heater power reporting. Useful for PID monitoring.
 *   PID tuning
 *   CoreXY kinematics (www.corexy.com/theory.html)
+*   Configurable serial port to support connection of wireless adaptors.
 
 The default baudrate is 250000. This baudrate has less jitter and hence errors than the usual 115200 baud, but is less supported by drivers and host-environments.