Update README

README.md

@@ -1,3 +1,12 @@
 Required packages:
 - dnsutils
 - curl
+
+When you are configuring the package you must place the *.env file in the home directory of the user who will execute the script by copying the exemple file, then edit it :
+
+```
+cp myscript.env.example ~/myscript.env
+nano ~/myscript.env
+```
+
+Moreover, you should add a job to execute some scripts in a crontab, for example it could be a good idea for the dyndns script or the renew script.