Fixes #327

Finally, as the author suggest, by removing the condition "|| !bluetoothAdapter.isMultipleAdvertisementSupported()" 2 of my old android cellphones start working, because they support advertising but the condition isMultipleAdvertisementSupported returned false for both of them.

Author: antonioparraga

src/android/BluetoothLePlugin.java

@@ -684,7 +684,7 @@ private void startAdvertisingAction(JSONArray args, CallbackContext callbackCont
     }
 
     BluetoothLeAdvertiser advertiser = bluetoothAdapter.getBluetoothLeAdvertiser();
-    if (advertiser == null || !bluetoothAdapter.isMultipleAdvertisementSupported()) {
+    if (advertiser == null) {
       JSONObject returnObj = new JSONObject();
 
       addProperty(returnObj, "error", "startAdvertising");
@@ -759,7 +759,7 @@ private void startAdvertisingAction(JSONArray args, CallbackContext callbackCont
 
   private void stopAdvertisingAction(JSONArray args, CallbackContext callbackContext) {
     BluetoothLeAdvertiser advertiser = bluetoothAdapter.getBluetoothLeAdvertiser();
-    if (advertiser == null || !bluetoothAdapter.isMultipleAdvertisementSupported()) {
+    if (advertiser == null) {
       JSONObject returnObj = new JSONObject();
 
       addProperty(returnObj, "error", "startAdvertising");