Would it make sense to display the latest released version of a package in the Github repository, especially if the only documentation for that package is in the README.md file?
For the newcomer, it is confusing to try an example in master and getting an error; for the experienced user, it is a matter of selecting the master branch.
(Without pointing the finger to the excellent LsqFit.jl package, the recent change to dof and coef is such an example.)