Merge pull request #73 from r-multiverse/169

Suggest installation instructions in contributors.md

Author: wlandau

contributors.md

@@ -112,6 +112,12 @@ To add a dynamic 'R-multiverse' badge for package readme files, like the one abo
 [![R-multiverse status](https://img.shields.io/badge/dynamic/json?url=https%3A%2F%2Fcommunity.r-multiverse.org%2Fapi%2Fpackages%2FpkgNAME&query=%24.Version&label=r-multiverse)](https://community.r-multiverse.org/pkgNAME)
 ```
 
+## Installation instructions
+
+In the `README` of your package, it is good practice to include installation instructions ([example](https://github.com/pola-rs/r-polars/blob/main/README.md#install)).
+Please see the [overview page](https://r-multiverse.org/overview.html#installing-packages) for general instructions on installing packages from R-multiverse.
+Feel free to adapt these instructions for your own package.
+
 ## Deregistration
 
 If it becomes necessary to deregister a package from R-multiverse, you may submit a