diff --git a/dev/readme.md b/dev/readme.md
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--- /dev/null
+++ b/dev/readme.md
@@ -0,0 +1,2 @@
+Set env var GANDI_API_KEY to your GANDI LiveDNS API key and run ./dev_shell.sh
+to get a shell with certbot ready to run with the plugin installed.
diff --git a/dev/readme.txt b/dev/readme.txt
deleted file mode 100644
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--- a/dev/readme.txt
+++ /dev/null
@@ -1 +0,0 @@
-Set env var GANDI_API_KEY to your GANDI LiveDNS API key and run ./dev_shell.sh to get a shell with certbot ready to run with the plugin installed.