diff --git a/README.md b/README.md
index 065473a..a3d1f13 100644
--- a/README.md
+++ b/README.md
@@ -139,6 +139,7 @@ CREATE TABLE sql_user_group
 ### WordPress
 
 Thanks to this app, Nextcloud can easily integrate with Wordpress.
+
 In the Nextcloud user table settings of SQL Backends, configure it as:
 ```
 User table: wp_users
@@ -151,6 +152,7 @@ Hashing algorithm: Unix (Crypt)
 ### JHipster
 
 It is very easy to integrate Nextcloud with JHipster.
+
 Follow the Using the Database instructions in [Using Jhipster in development](http://www.jhipster.tech/development/) to configure your database. Assume you chose MySQL as JHipster database.
 In the Nextcloud user table settings of SQL Backends, configure it as:
 ```
@@ -162,54 +164,28 @@ Email column: email
 Hashing algorithm: Unix (Crypt)
 ```
 
-## Features
-Currently, it supports most of postfixadmin's encryption options, except dovecot and saslauthd.
-It was tested and developed for a postfixadmin database.
+# Hash algorithms
 
-Password changing is disabled by default, but can be enabled in the Admin area.
-Caution: user_sql does not recreate password salts, which imposes a security risk. 
-Password salts should be newly generated whenever the password changes.
+TODO
 
-The column autocomplete works only for MySQL and PostgreSQL database which is used to validate form data.
-If you use other database use *occ* command to set the application config parameters with domain suffix.
+# Development
 
-For example to set 'sql_hostname' parameter in default domain use:
+## Add new database support
 
-```occ config:app:set user_sql 'sql_hostname_default' --value='localhost'```
+TODO
+ 
+## Add new hashing algorithm
 
-### Currently supported parameters
+TODO
 
-- sql_hostname
-- sql_username
-- sql_password
-- sql_database
-- sql_table
-- sql_driver
-- col_username
-- col_password
-- col_active
-- col_displayname
-- col_email
-- col_gethome
-- set_active_invert
-- set_allow_pwchange
-- set_default_domain
-- set_strip_domain
-- set_crypt_type
-- set_mail_sync_mode
-- set_enable_gethome
-- set_gethome_mode
-- set_gethome
-- sql_group_table
-- col_group_username
-- col_group_name
+# Acknowledgments
 
-## Acknowledgments
 This repository contains continuation of work done in [this repo](https://www.aboehler.at/hg/user_sql/).
+This plugin was heavily based on user_imap, user_pwauth, user_ldap and user_redmine!
 
-This plugin is heavily based on user_imap, user_pwauth, user_ldap and user_redmine!
+Since version 4.0.0 the whole core implementation has been rewritten.
 
-### Credits
+# Credits
 
   * Andreas Boehler for releasing the first version of this application
   * Johan Hendriks provided his user_postfixadmin