Create intro/getting started guide

[michaelsena]

This is somewhat more involved as ideally we can set up the infrastructure first:

• an embedded web shell, where a user clicks to connect, generates them a throwaway account, and they can paste code and have it execute using ceramic.js, did.js, key did provider and resolver,
• Then we actually have to create the guide, which ideally is the user actually creating a simple hello world application like a microblog or social network application. I think this consists of 4 or 5 steps:

1. Deploy schemas (post, postIndex)
2. Store data (create two posts, add to post index)
3. Add to account (add post index to cip-11)
4. Query (query back)
5. Discover ()

Need to work through this