Update README.md

Adding docs for `isRemoveWifiNetwork` and `reScanAndLoadWifiList`

Author: Parth Barot

README.md

@@ -122,4 +122,19 @@ Get current IP
 wifi.getIP((ip)=>{
   console.log(ip);
 });
-```
+```
+
+Remove/Forget the Wifi network from mobile by SSID, returns boolean
+``` javascript
+wifi.isRemoveWifiNetwork(ssid, (isRemoved) => {
+  console.log("Forgetting the wifi device - " + ssid);
+});
+```
+
+Starts native Android wifi network scanning and returns list
+``` javascript
+wifi.reScanAndLoadWifiList((wifiStringList) => {
+  var wifiArray = JSON.parse(wifiStringList);
+  console.log('Detected wifi networks - ',wifiArray);
+});
+```