The installation instructions for Podman and libpod now reside here in the podman.io site. From the homepage, the installation instructions can be found under "Get Started->Installing Podman".
The podman.io site resides in a GitHub under the Containers repository at https://github.com/containers/podman.io. If you see a change that needs to happen to the installation instructions, please feel free to open a pull request there, we're always happy to have new contributors!