fix tunnelling error when getting WebApi behind a proxy (#332)

fixes #331 The tunnel dependency is using an old version. The newer version includes a fix for the error.

Author: vladnega

package-lock.json

@@ -24,7 +24,7 @@
     ],
     "license": "MIT",
     "dependencies": {
-        "tunnel": "0.0.4",
+        "tunnel": "0.0.6",
         "typed-rest-client": "1.2.0",
         "underscore": "1.8.3"
     },