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README.md

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 [![codecov.io](http://codecov.io/github/scls19fr/ExtensibleScheduler.jl/coverage.svg?branch=master)](http://codecov.io/github/scls19fr/ExtensibleScheduler.jl?branch=master)
 
+[![](https://img.shields.io/badge/docs-stable-blue.svg)](https://scls19fr.github.io/ExtensibleScheduler.jl/stable) or [![](https://img.shields.io/badge/docs-latest-blue.svg)](https://scls19fr.github.io/ExtensibleScheduler.jl/latest)
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 An advanced and extensible [Julia](https://julialang.org/) events scheduler inspired by Python schedulers [APScheduler](https://apscheduler.readthedocs.io/), [schedule](https://github.com/dbader/schedule) and [sched](https://docs.python.org/3/library/sched.html).