Update Authentification

Authentification.md

@@ -92,5 +92,13 @@ Here is an example for a persons object accessright:
       }
     }`
 ```
+## An easy way to use in a web dev project
+
+To send authenticate request to the api as an alias, you must set the headers with a valid xhash for a xdays valid for 24hours. To get this you can:
+- dev around openPGP technology  (for example in js https://openpgpjs.org/ )
+- call https://yourdomain/personnal/apxid_lg.html?url=urlA  (where urlA is the redirection when authenticate, if not it stay in signin mode awaiting user authentify himself.
+
+
+