Release on CRAN!

[thibautjombart]

The package is used for examples throughout other RECON packages, so we need to get it on CRAN before making any other release (incidence is ready to go).

We need to go through our own guidelines:
http://www.repidemicsconsortium.org/resources/guidelines/

But most of it will be made easier as there's no code in this package.

@finlaycampbell lemme know if you have questions at any point; we also now have a slack for RECONHUB - I just invited you:
https://reconhub.slack.com/messages/general/

[sdwfrost]

Anything I can help with?

[thibautjombart]

Thanks for offering! :) This should be an easy one. Even examples will be minimum as we need to avoid circular dependencies. If datasets you contributed are all documented, that's perfect :)

[finlaycampbell]

Now on CRAN!