Adding curl demo for bash users

[0xjjpa]

Before I tried to jump into the JavaScript component, I wanted to try it from my bash and realized it took a bit longer than I would have expected (graphql queries are oddly formatted). Since other people might want to do the same, added a slide where they can copy and paste the commands and a sample file where the query is properly formatted.

For people using Gitpod it will look something like this:

Hope it helps :)

[pi0neerpat]

This is awesome thanks you!