diff --git a/README.md b/README.md
index 9c9d558..70508af 100644
--- a/README.md
+++ b/README.md
@@ -24,16 +24,11 @@ Installation
 git clone https://github.com/Kloadut/SSOwat /etc/ssowat
 ```
 
-* Edit SSOwat configuration
 
-```
-nano /etc/ssowat/conf.json
-```
+Nginx configuration
+-------------------
 
-Nginx conf
-----------
-
-* Add SSOwat's Nginx configuration (http{} scope)
+* Add SSOwat's Nginx configuration (`http{}` scope)
 
 ```bash
 nano /etc/nginx/conf.d/ssowat.conf
@@ -47,4 +42,41 @@ access_by_lua_file /etc/ssowat/access.lua;
 
 ```
 
-**That's it !**
+You can also put the `access_by_lua_file` directive in a `server{}` scope if you want to protect only a vhost.
+
+
+SSOwat configuration
+--------------------
+
+```
+nano /etc/ssowat/conf.json
+```
+
+If you use YunoHost, you may want to edit the `/etc/ssowat/conf.json.persistent` file, since the `/etc/ssowat/conf.json` will often be overwritten.
+
+### Available parameters
+
+* `portal_domain`: Domain of the authentication portal. It has to be a domain, IP addresses will not work with SSOwat (**Required**)
+* `portal_path`: URI of the authentication portal (default: `/ssowat`)
+* `portal_port`: Web port of the authentication portal (default: 443)
+* `portal_scheme`: Whether authentication should use secure connection or not (default: `https`)
+* `domains`: List of handle domains (default: portal_domain)
+* `ldap_host`: LDAP server hostname (default: `localhost`)
+* `ldap_group`: LDAP group to search in (default: **`ou=users,dc=yunohost,dc=org`**)
+* `ldap_identifier`: LDAP user identifier (default: `uid`)
+* `ldap_attributes`: User's attributes to fetch from LDAP (default: `["uid", "givenname", "sn", "cn", "homedirectory", "mail", "maildrop"]`)
+* `allow_mail_authentication`: Whether users can authenticate with their mail address (default: `true`)
+* `login_arg`: URI argument to use for cross-domain authentication (default: `sso_login`)
+* `additional_headers`: Array of additionnal HTTP headers to set once user is authenticated (default: `{ "Remote-User": "uid" }`)
+* `session_timeout`: The session expiracy time limit in seconds, since the last connection (default: `86400` / one day)
+* `session_max_timeout`: The session expiracy time limit in seconds (default: `604800` / one week)
+* `protected_urls`: List of priorily protected URLs and/or URIs (**by default, every URL is protected**)
+* `protected_regex`: List of regular expressions to be matched against URLs **and** URIs to protect them
+* `skipped_urls`: List of URLs and/or URIs that will not be affected by SSOwat
+* `skipped_regex`: List of regular expressions to be matched against URLs **and** URIs to ignore them
+* `unprotected_urls`: List of URLs and/or URIs that will not be affected by SSOwat **unless user is authenticated**
+* `unprotected_regex`: List of regular expressions to be matched against URLs **and** URIs to ignore them **unless user is authenticated**
+* `redirected_urls`: Array of URLs and/or URIs to redirect and their redirect URI/URL (example: `{ "/", "example.org/subpath" }`)
+* `redirected_regex`: Array of regular expressions to be matched against URLS **and** URIs and their redirect URI/URL (example: `{ "example.org/megusta$", "example.org/subpath" }`)
+* `users`: 2-level array containing usernames and their allowed URLs along with an App name (example: `{ "kload": { "kload.fr/myapp/": "My App" } }`)
+