Add new features to README

README.md

@@ -23,6 +23,8 @@ open-source map based on [OpenStreetMap](https://openstreetmap.org/). Features i
       of the markers and lines automatically, and a legend is generated automatically to explain what the different
       styles stand for.
     * The current map view can be saved for others to open.
+    * Map objects that do not fit a certain filter expression can be hidden (using [Filtrex](https://github.com/joewalnes/filtrex))
+    * There is a modification history and changes can be undone
 * Can be easily run on your server or embedded into your website (see below).
 
 On the client side, FacilMap relies heavily on [AngularJS](https://angularjs.org/), [Leaflet](http://leafletjs.com/)

frontend/app/map/about/about.html

@@ -19,6 +19,7 @@
 		<li><a href="http://leafletjs.com/" target="_blank">Leaflet</a></li>
 		<li><a href="http://project-osrm.org/" target="_blank">OSRM</a></li>
 		<li><a href="https://nominatim.openstreetmap.org/" target="_blank">Nominatim</a></li>
+		<li><a href="https://github.com/joewalnes/filtrex" target="_blank">Filtrex</a></li>
 	</ul>
 	<h4>Icons</h4>
 	<ul class="list-inline">