fix(package): update http-auth to version 4.1.0

Closes #113

Author: greenkeeper[bot]

package.json

@@ -8,7 +8,7 @@
     "body-parser": "^1.14.1",
     "colors": "^1.1.2",
     "express": "^4.13.3",
-    "http-auth": "^3.1.0",
+    "http-auth": "^4.1.0",
     "js-yaml": "^3.13.0",
     "kill-switch": "^2.0.0",
     "mkdirp": "^0.5.1"