Add two sections to the README

README.md

@@ -15,14 +15,24 @@ same level of functionality and still be able to host a complete mail server
 at little cost while running only FOSS, applying the KISS principle and being
 able to fine-tune some details if needed.
 
+Features
+========
 
+Main features include:
 
+- **Standard email server**, IMAP and IMAP+, SMTP and Submission
+- **Web access**, Roundcube-based Webmail and adminitration interface
+- **User features**, aliases, auto-reply, auto-forward, fetched accounts
+- **Admin features**, global admins, per-domain delegation, quotas
+- **Security**, enforced TLS, outgoing DKIM, anti-virus scanner
+- **Antispam**, auto-learn, greylisting, DMARC and SPF
 
+![Creating a new user](http://freeposte.io/screenshots/create.png)
 
 Running a mail server
 =====================
 
-Freeposte runs on top of Docker for easy packaging and upgrades. All you need
+Freeposte.io runs on top of Docker for easy packaging and upgrades. All you need
 is a proper system with Docker and Compose installed, then simply download
 the ``docker-compose.yml`` and sample ``freeposte.env``, tune them to your
 needs and fire up the mail server:
@@ -31,5 +41,14 @@ needs and fire up the mail server:
 docker-compose up -d
 ```
 
-For a detailed walktrough, see ``INSTALL.md``. Also, see ``MANAGE.md`` for
-details about daily maintenance of your mail server.
+For a detailed walktrough, see the [Setup Guide](https://github.com/kaiyou/freeposte.io/wiki/Setup-Guide).
+
+Contributing
+============
+
+Freeposte.io is free software, open to suggestions and contributions. All
+components are free software and compatible with the MIT license. All
+specific configuration files, Dockerfiles and code are placed under the
+MIT license.
+
+For details, see the [Contributor Guide](https://github.com/kaiyou/freeposte.io/wiki/Contributors-Guide).