Render function as mentioned in issue #146, only works in browser context

Updated build scripts
New way for bundling content in dist, tobe tested, currently to be considered beta

src/diagrams/flowchart/dagre-d3.js

@@ -1,11 +1,12 @@
 /* global window */
 
 var dagreD3;
-
+//console.log('setting up dagre-d3');
 if (require) {
   try {
     dagreD3 = require("dagre-d3");
-  } catch (e) {}
+      //console.log('Got it (dagre-d3)');
+  } catch (e) {console.log('Could not load dagre-d3');}
 }
 
 if (!dagreD3) {