Update README file

README.md

@@ -4,6 +4,25 @@ EesyPHP is an easy and minimalist PHP framework for web application. It's curren
 provided with a minimalist demo application that permit to manage items stored in
 a database.
 
+## Features
+
+This project aim to provide all main necessary elements to build a web application without starting with nothing. It based on great open source libraries for that and manage their integration together and their initialization to leave you to use them without handling this boring part.
+
+Main features are :
+
+* a configuration manager actually based on the [yaml](https://yaml.org/) file format
+* an URL routing system with a syntax based on regex
+* a templating solution based on [Smarty](https://www.smarty.net/)
+* an easily expandable authentication system with native HTML form, HTTP and CAS SSO support (based on [phpCAS](https://github.com/apereo/phpCAS)), database and LDAP users backends and a ligth user object abstraction solution with expandable attributes
+* a logging system with PHP errors & exceptions handling
+* a [Sentry](https://sentry.io) integration
+* a PHP session manager (with expiration and max life handling)
+* a mailer solution to forge and send emails
+* an internationalization system based on [Gettext](https://www.gnu.org/software/gettext/) with Smarty templates (based on [Smarty Gettext](https://github.com/smarty-gettext/smarty-gettext)) and Javascript (based on [Babel JS](https://babeljs.io/)) integrations
+* a command line manager to easily implement CLI tools
+
+All this features can be or not enabled and their initialization are manage by an application abstraction class.
+
 ## Installation / configuration
 
 Please see dedicated files in _docs_ directory.