chore(package): update newman to version 3.6.0 (#15)

package.json

@@ -33,7 +33,7 @@
     "eslint": "~3.18.0",
     "istanbul": "~0.4.5",
     "mocha": "~3.3.0",
-    "newman": "~3.5.0",
+    "newman": "~3.6.0",
     "should": "~11.2.0",
     "sinon": "~2.1.0",
     "coveralls": "~2.13.0"