radial d3 tree
FIRST WORKING VERSION

Change-Id: Idf24da1ec46651991744966c62999f5f08055654
diff --git a/package.json b/package.json
index 2a8a843..1273f87 100644
--- a/package.json
+++ b/package.json
@@ -30,8 +30,8 @@
     "marked": "^0.3.2",
     "mercury": "^12.0.0",
     "routes": "^1.2.0",
+    "d3": "~3.5.5",
     "lodash": "~3.0.0",
-    "vis": "~3.9.1",
     "extend": "~2.0.0",
     "bluebird": "~2.3.2"
   }