fix(package): update yargs to version 10.1.1

Closes #20

Author: greenkeeper[bot]

package.json

@@ -61,7 +61,7 @@
     "ramda": "^0.24.1",
     "request-promise": "^4.2.1",
     "update-notifier": "^2.2.0",
-    "yargs": "^8.0.2"
+    "yargs": "^10.1.1"
   },
   "devDependencies": {
     "await-url": "^0.3.0",