Update README.md

README.md

@@ -3,5 +3,28 @@ DeviceDetector
 
 The Universal Device Detection library, that parses User Agents and detects devices (desktop, tablet, mobile, tv, cars, console, etc.), and detects browsers, operating systems, devices, brands and models.
 
+## Usage
+
+```
+$dd = new DeviceDetector($userAgent);
+$dd->parse();
+$browserInfo = $dd->getBrowser();
+$osInfo = $dd->getOs();
+$device = $dd->getDevice();
+$brand= $dd->getBrand();
+$model= $dd->getModel();
+```
+
+## Tests
 
 Build status (master branch) [![Build Status](https://travis-ci.org/piwik/device-detector.png?branch=master)](https://travis-ci.org/piwik/device-detector)
+
+See also: [QA at Piwik](http://piwik.org/qa/)
+
+## Credits
+
+[Piwik team](http://piwik.org/team/)
+
+## Contribute
+
+We are looking forward to your contributions and pull requests. Together we can build the best Device Detection library!