Added some event triggers regarding image loading

src/js/init.js

@@ -88,6 +88,12 @@
         })
         .on('PIE:dragbar-click', function(e, data) {
            console.log('Clicked on a dragbar! Axis: ' + data.axis);
+        })
+        .on('PIE:image-start-load', function() {
+           console.log('Start loading image');
+        })
+        .on('PIE:image-end-load', function() {
+           console.log('Image loaded');
         });
     $window.on('resize', Event.handleResize);