"Articles With Relationship" code doesn't match or explain properly

[commentors-net]

The code in github doesn't match the demo.
Just to get multiselect work there is too much of hit and try required, especially for a person who haven't worked with Vue.

There is lack of proper explanation about the implementation of Articles With Relationship, which I don't expect.
I was at least expecting the code and demo both are in sync but it isn't case. Very good example: multiselect's :multiple is set to false. and you use same code you see you can't do multiple selection unless you change it to true.
There are few more things which doesn't match. Anyway, I hope github will sync the code what you have in demo.