push notifications for android

Hi All, i am developing an android app, using titanium studio in that i want to implement push notifications , how can we implement push notifiacations i have read titanium documentation in that they have told if you need device token, how can we get device token please help me.

i have used the following code but i am getting the following error

“Failed to register for push! Failed wrong GCM senderID. Getting GCM SenderId failed. Max retry time reaches.”

// Require the module
var CloudPush = require('ti.cloudpush');
var deviceToken = null;
 
// Initialize the module
CloudPush.retrieveDeviceToken({
    success: deviceTokenSuccess,
    error: deviceTokenError
});
// Enable push notifications for this device
// Save the device token for subsequent API calls
function deviceTokenSuccess(e) {
    deviceToken = e.deviceToken;
}
function deviceTokenError(e) {
    alert('Failed to register for push notifications! ' + e.error);
}
 
// Process incoming push notifications
CloudPush.addEventListener('callback', function (evt) {
    alert("Notification received: " + evt.payload);
});