Moving normalizeBBox to util.js

src/js/util.js

@@ -1,6 +1,17 @@
+import _ from 'lodash';
+
 export function customEvent(name, detail) {
   var evt = document.createEvent('Event');
   evt.initEvent(name, true, true);
   evt.detail = detail;
   return evt;
 }
+
+
+export function normalizeBBox(box) {
+  return _.extend({
+    ax: box.x,
+    ax2: box.x2,
+    ay: box.cy
+  }, box);
+}