For #41 - updated features list

README.md

@@ -61,6 +61,7 @@ This project has following features, which don't exist in original `traccar-web`
 * possibility to import archive from [GPX](http://en.wikipedia.org/wiki/GPS_Exchange_Format)
 * possibility to log in via GET request to a separate servlet (for example, for integration on external sites) - `http://server-ip:8082/traccar/s/login?user=your_username&password=your_password`
 * possibility to change other user's password for administrators and managers
+* possibility to change device marker
 
 
 ## Building