Examples on README

[PaulPMT]

Hello,

We're trying to get kamon-http4s to work in our project. But, the README in the repository is 1.5 year old and having trouble following the example in there.

Would like to ask if the project is still maintained and is there an example we could follow to integrate with kamon-http4s?

Following the example in the current README, we are trying to figure out:

1. Where does Effect get imported from?
2. How to configure a BlazeBuilder[F] with the latest versions of the module?(https://github.com/http4s/blaze#http4s-backend)