Upgrade mbus

Author: DamonOehlman

package.json

@@ -28,7 +28,7 @@
     "collections": "^1",
     "curry": "^1.2.0",
     "debug": "^2.0.0",
-    "mbus": "^1.3.2",
+    "mbus": "^2.0.0",
     "primus": "^2",
     "through": "^2",
     "ws": "^0.6.3"
@@ -47,4 +47,4 @@
     "uuid": "^2.0.1",
     "whisk": "^1.0.0"
   }
-}
+}