Merge branch 'release-0.3.1'

Author: huston

app/index.html

@@ -40,9 +40,7 @@
         <script src="scripts/else.js"></script>
         <script type="text/javascript">
           var config = {
-            dataSource: 'sample_data/contrib.json',
-            // curvedEdges: true,
-            directedEdges: true
+            dataSource: 'sample_data/contrib.json'
           };
 
           alchemy.begin(config)