add offset to cron job

README.md

@@ -18,6 +18,12 @@ You can then run the script as a cron job :
 */15 * * * * python /home/user/gandi_ddns.py
 ```
 
+But to be nice to the API servers, you should choose a random offset for your job. For example to run at 2 minutes after the hour, and then every 15 minutes :
+
+```
+2-59/15 * * * * pythong /home/user/gandi-ddns.py
+```
+
 macOS
 
 ```
@@ -26,9 +32,3 @@ ln -s $(pwd) /usr/local/gandi-ddns
 sudo cp gandi.ddns.plist /Library/LaunchDaemons/
 sudo launchctl /Library/LaunchDaemons/gandi.ddns.plist
 ```
-
-But to be nice to the API servers, you should choose a random offset, for example to run at 2 minutes after the hour, and then every 15 minutes :
-
-```
-2-59/15 * * * * python /home/user/gandi-ddns.py
-```