README: add repology badge

 README.md | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/README.md b/README.md
index 2b60008..e20f8c3 100644
--- a/README.md
+++ b/README.md
@@ -20,6 +20,10 @@ separate `riverctl` binary implementing it.
 
 ## Building
 
+<a href="https://repology.org/project/river/versions">
+    <img src="https://repology.org/badge/vertical-allrepos/river.svg" alt="Packaging status" align="right">
+</a>
+
 On cloning the repository, you must init and update the submodules as well
 with e.g.