add Template snaippet v-for with index

[k525245669]

Hi, i am a Vue coder and i am very happy to find this VsCode extension, it will help me efficiently write Vue code in my daily.
I often write the code like below:

<div v-for="(item, i) in items" :key="i"> {{ item }} </div> 

I think the snippet vfori will useful when the ViewModel without the id attributes.
It's my first time to contribute code in open source , waiting for your reply.

[sdras]

Hi! This looks great, I really like it. Thanks for updating the readme as well. The only thing that needs changing is that we should default to item for the key value (you shouldn't use the index, as that might change, so it will cause errors.) Thanks!

[k525245669]

You are so kind to point out my mistake. At the first I can't understand how it will cause errors, and i read the official docs about key, but i still can't understand, until I read this post, thank you for a lot.