added even more instructions for firmware flashing

code/esp8266/README.md

@@ -33,4 +33,11 @@ For ESP12F use the following settings in Arduino IDE
 * Programmer: AVRISP mkII
 
 
-These settings give you about 2.471 KB of SPIFFS storage space for files and ~512KB sketch size
+These settings give you about 2.471 KB of SPIFFS storage space for files and ~512KB sketch size
+
+
+### Over The Air (OTA) Uploading
+
+* Connect to the hotspot created by the ESP12F.
+* Launch Arduino, choose "esp at 192.168.4.1" as the port. 
+* If you don't see the port listed in Arduino (Tools > Port), restart Arduino IDE.