add info in the doc

README.md

@@ -1,7 +1,8 @@
 ## How to deploy :
 
 * Delete all /etc/bind/ directory
-* git clone
+* git clone https://git.virtit.fr/VirtIT/tpl-bind9 /etc/bind
+* rm -r /etc/bind/.git
 * Run ```rndc-confgen | grep '^key "rndc-key" {' -A3 > rndc.key```
 * Restart bind service