Also trigger the svgEditorReady event when opened through an iframe.

editor/svg-editor.js

@@ -798,7 +798,7 @@ TODOS
 			(function() {
 				// let the opener know SVG Edit is ready (now that config is set up)
 				var svgEditorReadyEvent,
-					w = window.opener;
+					w = window.opener || window.parent;
 				if (w) {
 					try {
 						svgEditorReadyEvent = w.document.createEvent('Event');