message: feat(README): add Zenodo DOI badge
diff: @@ -144,6 +144,13 @@ by Nextstrain team
  />
  </a>
  + <a href="https://doi.org/10.5281/zenodo.5607694">
  + <img
  + src="https://zenodo.org/badge/DOI/10.5281/zenodo.5607694.svg"
  + alt="Zenodo DOI">
  + </a>
  +
  +
  </p>
  ---
  