add repostatus badge

Author: fmichonneau

README.Rmd

@@ -16,6 +16,8 @@ opts_knit$set(upload.fun = imgur_upload)
 [![CRAN RStudio mirror downloads](http://cranlogs.r-pkg.org/badges/rotl)](http://www.r-pkg.org/pkg/rotl)
 [![Research software impact](http://depsy.org/api/package/cran/rotl/badge.svg)](http://depsy.org/package/r/rotl)
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+[![Project Status: Active – The project has reached a stable, usable state and is being actively developed.](https://www.repostatus.org/badges/latest/active.svg)](https://www.repostatus.org/#active)
+
 
 # An R interface to Open Tree API
 

README.md

@@ -1,6 +1,8 @@
 
 [![Build Status](https://travis-ci.org/ropensci/rotl.svg?branch=master)](https://travis-ci.org/ropensci/rotl) [![Build status](https://ci.appveyor.com/api/projects/status/qr4k9a8wlrjl65rp?svg=true)](https://ci.appveyor.com/project/ropensci/rotl) [![codecov.io](https://codecov.io/github/ropensci/rotl/coverage.svg?branch=master)](https://codecov.io/github/ropensci/rotl?branch=master) [![](http://www.r-pkg.org/badges/version/rotl)](http://www.r-pkg.org/pkg/rotl) [![CRAN RStudio mirror downloads](http://cranlogs.r-pkg.org/badges/rotl)](http://www.r-pkg.org/pkg/rotl) [![Research software impact](http://depsy.org/api/package/cran/rotl/badge.svg)](http://depsy.org/package/r/rotl)
 [![](https://badges.ropensci.org/17_status.svg)](https://github.com/ropensci/onboarding/issues/17)
+[![Project Status: Active – The project has reached a stable, usable state and is being actively developed.](https://www.repostatus.org/badges/latest/active.svg)](https://www.repostatus.org/#active)
+
 
 An R interface to Open Tree API
 ===============================