Mention --geojson option in readme

yohanboniface · yohanboniface · commit d72b09dd593f · 2022-11-25T13:19:11.000+01:00
diff --git a/README.md b/README.md
@@ -52,6 +52,10 @@ of tests) ?
 
     py.test --max-run 100
 
+Can I have a geojson to compare failures ?
+
+    py.test --geojson
+
 You can compare two runs (for example to compare two branches). First, save the
 report from the first run:
 
