fix(deps): remove superfluous multiaddr dependency, update it to latest

Author: daviddias

package.json

@@ -40,12 +40,11 @@
     "aegir": "^8.0.0",
     "buffer-loader": "0.0.1",
     "chai": "^3.5.0",
-    "multiaddr": "^2.0.2",
     "pre-commit": "^1.1.3"
   },
   "dependencies": {
     "babel-runtime": "^6.11.6",
-    "multiaddr": "^1.4.1",
+    "multiaddr": "^2.0.3",
     "peer-id": "^0.7.0"
   },
   "contributors": [