docs: update readme

Author: rpreen

README.md

@@ -42,6 +42,10 @@ Before using any function from the package, an acro object should be initialised
 >>> acro_init(suppress = TRUE)
 ```
 
+### Try Online with MyBinder
+
+Try an example notebook in RStudio online on [MyBinder.org](https://mybinder.org/v2/gh/AI-SDC/ACRO-R/main?urlpath=rstudio). Select the `example-notebook.Rmd` in the bottom-right pane after loading.
+
 ### Documentation
 
 The github-pages contains pre-built [documentation](https://ai-sdc.github.io/ACRO-R/).