Add a repo description

[Mr0grog]

We’re trying to make sure every repo has a description (see ipfs-inactive/docs#55) and this repo is missing one. I don’t have permissions to add it, but I’d suggest something like:

Configuration and scripts for deploying IPFS with Kubernetes or Minikube.

However, it’s not totally clear to me whether the work here is meant specifically for testing (and specifically for ipfs-cluster or just general testing) or whether it can/should be used as a template for for a more generic deployment. If so, it would be good to note that in the description and the README, e.g:

Configuration and scripts for deploying a test cluster of IPFS nodes with Kubernetes or Minikube.