Add link to Repology?

[chrisdebian]

Hi, all.

So that potential users can see which distros have which version of grig, would it be sensible to use a 'badge' from this page, in the installation instructions?

https://repology.org/project/grig/badges

Thanks,

Chris
2E0FRU

[chrisdebian]

Opened #24 to add a Repology packaging-status badge — thanks for the suggestion.