Add new file

pnv.js

+var mraa = new require("mraa"); //require mraa
+console.log('MRAA Version: ' + mraa.getVersion()); //write the mraa version to the Intel XDK console
+
+var myOnboardLed = new mraa.Gpio(13); //LED hooked up to digital pin 13 (or built in pin on Galileo Gen1 & Gen2)
+myOnboardLed.dir(mraa.DIR_OUT); //set the gpio direction to output
+var ledState = true; //Boolean to hold the state of Led
+
+periodicActivity(); //call the periodicActivity function
+
+function periodicActivity()
+{
+  myOnboardLed.write(ledState?1:0); //if ledState is true then write a '1' (high) otherwise write a '0' (low)
+  ledState = !ledState; //invert the ledState
+  setTimeout(periodicActivity,1000); //call the indicated function after 1 second (1000 milliseconds)
+}
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