title: Changing cordova barcode scanner default message
body: <p>I am using cordova barcodescanner for my hybrid app development and i am very concern about the default message of the barcode scanner which says:  <strong>"Place a barcode inside the viewfinder rectangle to scan it."</strong></p>
  
  <p>How could i change the default message? I am expecting similar to this:
  NgCordova:
        $cordovaBarcodeScanner
            .scan()
            .title('Please scan here') //something like this
            .then(function(barcodeData) {
              // Success! Barcode data is here
            }, function(error) {
              // An error occurred
            });</p>
  
  <p>From cordova plugins: But i dunno how to use it in cordovaBarcodeScanner</p>
  
  <pre><code>cordova.plugins.barcodeScanner.scan(
        function (result) {
  
        }, 
        function (error) {
            alert("Scanning failed: " + error);
        },
        {
            // how can i use this in above?
            "prompt" : "Place a barcode inside the scan area", 
        }
     );
  </code></pre>