Update yargs version (#66)

Author: ovhemert

package.json

@@ -33,7 +33,7 @@
   "dependencies": {
     "chalk": "^2.4.1",
     "glob": "^7.1.2",
-    "yargs": "^12.0.1"
+    "yargs": "^12.0.5"
   },
   "devDependencies": {
     "babel-cli": "^6.26.0",