Merge remote-tracking branch 'upstream/master'

Author: Guillaume Chau

README.md

@@ -66,6 +66,12 @@ Works with [vuex](https://github.com/vuejs/vuex) for time-travel debugging:
 	~~~~
 
 	When using Yarn, just replace `npm` with `yarn`.
+	
+
+### Commom problems and how to fix
+
+1. Fixing "Download the Vue Devtools for a better development experience" console message when working locally over `file://` protocol:
+  1.1 - Google Chrome: Right click on vue-devtools icon and click "Manage Extensions" then search for vue-devtools on the extensions list. Check the "Allow access to file URLs" box.
 
 
 ### License