add explicit mode to all examples

So people stop complaining when ap starts by default cause they dont know how esp works.

examples/Advanced/Advanced.ino

@@ -10,6 +10,7 @@ WiFiManager wm; // global wm instance
 WiFiManagerParameter custom_field; // global param ( for non blocking w params )
 
 void setup() {
+  WiFi.mode(WIFI_STA); // explicitly set mode, esp defaults to STA+AP  
   Serial.begin(115200);
   Serial.setDebugOutput(true);  
   delay(3000);

examples/AutoConnect/AutoConnectWithFSParametersAndCustomIP/AutoConnectWithFSParametersAndCustomIP.ino

@@ -77,6 +77,7 @@ void setupSpiffs(){
 }
 
 void setup() {
+  WiFi.mode(WIFI_STA); // explicitly set mode, esp defaults to STA+AP  
   // put your setup code here, to run once:
   Serial.begin(115200);
   Serial.println();

examples/AutoConnect/AutoConnectWithFeedbackLED/AutoConnectWithFeedbackLED.ino

@@ -29,6 +29,7 @@ void configModeCallback (WiFiManager *myWiFiManager) {
 }
 
 void setup() {
+  WiFi.mode(WIFI_STA); // explicitly set mode, esp defaults to STA+AP
   // put your setup code here, to run once:
   Serial.begin(115200);
   

examples/Basic/Basic.ino

@@ -1,6 +1,8 @@
 #include <WiFiManager.h> // https://github.com/tzapu/WiFiManager
 
 void setup() {
+    WiFi.mode(WIFI_STA); // explicitly set mode, esp defaults to STA+AP
+
     // put your setup code here, to run once:
     Serial.begin(115200);
     

examples/DEV/OnDemandConfigPortal/OnDemandConfigPortal.ino

@@ -93,6 +93,7 @@ void handleRoute(){
 }
 
 void setup() {
+  WiFi.mode(WIFI_STA); // explicitly set mode, esp defaults to STA+AP
   // put your setup code here, to run once:
   Serial.begin(115200);
   // Serial.setDebugOutput(true);  
@@ -127,6 +128,9 @@ void setup() {
   WiFiManagerParameter custom_tokenb("invalid token", "invalid token", "", 0); // id is invalid, cannot contain spaces
   WiFiManagerParameter custom_ipaddress("input_ip", "input IP", "", 15,"pattern='\\d{1,3}\\.\\d{1,3}\\.\\d{1,3}\\.\\d{1,3}'"); // custom input attrs (ip mask)
 
+  const char _customHtml_checkbox[] = "type=\"checkbox\""; 
+  WiFiManagerParameter custom_checkbox("checkbox", "my checkbox", "T", 2, _customHtml_checkbox, WFM_LABEL_AFTER);
+
   // callbacks
   wm.setAPCallback(configModeCallback);
   wm.setWebServerCallback(bindServerCallback);
@@ -140,6 +144,7 @@ void setup() {
   wm.addParameter(&custom_token);
   wm.addParameter(&custom_tokenb);
   wm.addParameter(&custom_ipaddress);
+  wm.addParameter(&custom_checkbox);
 
   custom_html.setValue("test",4);
   custom_token.setValue("test",4);

examples/NonBlocking/AutoConnectNonBlocking/AutoConnectNonBlocking.ino

@@ -2,6 +2,7 @@
 WiFiManager wm;
 
 void setup() {
+    WiFi.mode(WIFI_STA); // explicitly set mode, esp defaults to STA+AP    
     // put your setup code here, to run once:
     Serial.begin(115200);
     

examples/NonBlocking/AutoConnectNonBlockingwParams/AutoConnectNonBlockingwParams.ino

@@ -3,6 +3,7 @@ WiFiManager wm;
 WiFiManagerParameter custom_mqtt_server("server", "mqtt server", "", 40);
 
 void setup() {
+    WiFi.mode(WIFI_STA); // explicitly set mode, esp defaults to STA+AP    
     // put your setup code here, to run once:
     Serial.begin(115200);
     

examples/NonBlocking/OnDemandNonBlocking/onDemandNonBlocking.ino

@@ -17,6 +17,7 @@ bool portalRunning      = false;
 bool startAP            = false; // start AP and webserver if true, else start only webserver
 
 void setup() {
+  WiFi.mode(WIFI_STA); // explicitly set mode, esp defaults to STA+AP  
   // put your setup code here, to run once
   Serial.begin(115200);
   Serial.println("\n Starting");

examples/OnDemand/OnDemandConfigPortal/OnDemandConfigPortal.ino

@@ -12,6 +12,7 @@
 int timeout = 120; // seconds to run for
 
 void setup() {
+  WiFi.mode(WIFI_STA); // explicitly set mode, esp defaults to STA+AP  
   // put your setup code here, to run once:
   Serial.begin(115200);
   Serial.println("\n Starting");

examples/OnDemand/OnDemandWebPortal/onDemandWebPortal.ino

@@ -12,6 +12,7 @@ WiFiManager wm;
 bool portalRunning = false;
 
 void setup() {
+  WiFi.mode(WIFI_STA); // explicitly set mode, esp defaults to STA+AP 
   // put your setup code here, to run once
   Serial.begin(115200);
   Serial.println("\n Starting");

examples/ParamsChildClass/ParamsChildClass.ino

@@ -52,8 +52,9 @@ struct Settings {
 
 
 void setup() {
+    WiFi.mode(WIFI_STA); // explicitly set mode, esp defaults to STA+AP    
     pinMode(SETUP_PIN, INPUT_PULLUP);
-    Serial.begin(9600); 
+    Serial.begin(115200); 
 
     //Delay to push SETUP button
     Serial.println("Press setup button");