Call m2m_wifi_handle_events from WiFiClass::status()

[sandeepmistry]

For sketches that want to check the WiFi status and re-connect if
disconnected.

Example:

#include <WiFi101.h>

char ssid[] = "yourNetwork";     //  your network SSID (name)
char pass[] = "password";  // your network password

void setup() {
  //Initialize serial and wait for port to open:
  Serial.begin(9600);
  while (!Serial) {
    ; // wait for serial port to connect. Needed for native USB port only
  }

  // check for the presence of the shield:
  if (WiFi.status() == WL_NO_SHIELD) {
    Serial.println("WiFi shield not present");
    // don't continue:
    while (true);
  }
}

void loop() {
  if (WiFi.status() != WL_CONNECTED) {
    Serial.print("WiFi not connected, attempting to connect to WPA SSID: ");
    Serial.println(ssid);
    // Connect to WPA/WPA2 network:
    if (WiFi.begin(ssid, pass) == WL_CONNECTED) {
      Serial.println("You're connected to the network");
    } else {
      Serial.println("Network connection failed");
    }
  }

  delay(5000);
}

Without this change WiFi.status() will always return WL_CONNECTED once connected, even if access point is disconnected later.

[agdl]

This is great to be put in an RTC based standby interrupts. Users are asking for MKR1000 to switch wifi off with an end method. This example will be great to do it since you will need to reconnect after the end method