chore(package): update nightwatch to version 1.3.5

Closes #116

Author: greenkeeper[bot]

package.json

@@ -77,7 +77,7 @@
     "karma-jasmine": "^1.1.1",
     "karma-phantomjs-launcher": "^1.0.4",
     "karma-typescript": "^3.0.12",
-    "nightwatch": "^0.9.20",
+    "nightwatch": "^1.3.5",
     "node-sass": "^4.7.2",
     "nyc": "^12.0.1",
     "style-loader": "^0.22.0",