Add references to readme

README.md

@@ -4,3 +4,24 @@ A esp8266 button to toggle other esp8266 GPIO while it still enables the other d
 
 
 [Plan](https://ruahine.com:8888/sessions/jv5e7ktghunfb4m3wtag7dbnsw23rz4mlcyssms6)
+
+
+## References
+ - [ESP8266 dual mode](https://siytek.com/esp8266-ap-and-station-mode/) with instructions for network configuration.
+- [SOFTAP - GETTING A LIST OF CONNECTED CLIENTS](https://www.esp8266.com/viewtopic.php?t=5669#) @ esp8255 community forum
+``` c
+unsigned char softap_stations_cnt;
+struct station_info *stat_info;
+struct ip_addr *IPaddress;
+uint32 uintaddress;
+
+  softap_stations_cnt = wifi_softap_get_station_num(); // Count of stations which are connected to ESP8266 soft-AP
+  stat_info = wifi_softap_get_station_info();
+  Serial.write(softap_stations_cnt);
+  while (stat_info != NULL) {
+    IPaddress = &stat_info->ip;
+    uintaddress = IPaddress->addr;
+    Serial.write((uintaddress>>24));
+    stat_info = STAILQ_NEXT(stat_info, next);
+  }
+```