Analogous to source(), but works when given a Gist URL or ID.
https://anaconda.org/r_test/r-source.gist/badges/version.svg
https://anaconda.org/r_test/r-source.gist/badges/latest_release_date.svg
https://anaconda.org/r_test/r-source.gist/badges/latest_release_relative_date.svg
https://anaconda.org/r_test/r-source.gist/badges/platforms.svg
https://anaconda.org/r_test/r-source.gist/badges/license.svg
https://anaconda.org/r_test/r-source.gist/badges/downloads.svg