Added REST API call to get a summary of Flow Paths.

NOTE: This REST API call is needed for the ONOS GUI.
  GET /wm/onos/datagrid/get/ng-flows/summary/json

http://localhost:8080/wm/onos/datagrid/get/ng-flows/summary/json

Change-Id: Ie9dc36b2f6ed7a955b456e527db6b47de0a4e467
diff --git a/src/main/java/net/onrc/onos/datagrid/web/DatagridWebRoutable.java b/src/main/java/net/onrc/onos/datagrid/web/DatagridWebRoutable.java
index 0e8300a..82a1157 100755
--- a/src/main/java/net/onrc/onos/datagrid/web/DatagridWebRoutable.java
+++ b/src/main/java/net/onrc/onos/datagrid/web/DatagridWebRoutable.java
@@ -21,6 +21,7 @@
         router.attach("/get/intents/json", IntentResource.class);
         router.attach("/get/intent/{intent_id}/json", IntentResource.class);
         router.attach("/get/ng-events/json", GetNGEventsResource.class);
+        router.attach("/get/ng-flows/summary/json", GetNGFlowsSummaryResource.class);
         router.attach("/get/intents/{category}/json", IntentResource.class);
         router.attach("/get/intent/{category}/{intent_id}/json", IntentResource.class);
         router.attach("/delete/intents/json", IntentResource.class);