Add example IPFS README

[RichardLitt]

This adds an example IPFS README that conforms to standard-readme and should be able to help with making new READMEs for IPFS repositories. It is language agnostic. However, it is based on a request by the JS team (specifically, @diasdavid) in #225 (comment)

[daviddias]

When you say that I requested, you mean this:

It would be great to have a section for the badges that we always put in every repo

?

If yes, I was more thinking of just having a 'section' on the js guidelines (single doc) with the list of badges. I don't believe that having a full readme-template is a good idea since you already built a tool that scaffolds it, it might be just a lot of work to keep everything in sync.

[RichardLitt]

Ah. This should be the source of truth for IPFS repos - the tool for scaffolding works for standard-readmes but for IPFS readmes (which have some additions to standard-readme) should follow this template. We're not going to use ipfs/devtools anymore, so I am putting this here for now.

I don't think there are any JavaScript specific badges. I might be wrong here. Let me know if I am.