README.md updated

README.md

@@ -1,7 +1,18 @@
 # mpwo
 
-Self hosted workout/activity tracker written in python
+Self hosted workout/activity tracker written in Python.  
 ![dashboard](docs/img/snapshot.png)
+  
+Based on :
+- [Flask](http://flask.pocoo.org)
+- [Leaflet.js](http://leafletjs.com/) and [leaflet-gpx](https://github.com/mpetazzoni/leaflet-gpx) plugin
+- [Bootstrap](https://startbootstrap.com/) and [SB Admin v2](https://startbootstrap.com/template-overviews/sb-admin-2/) theme
 
-!! work in progress !!
 
+## Prerequisites
+- Python 3 (tested with 3.6 (on Manjaro))
+- Flask
+- [PyYAML](http://pyyaml.org)  
+- [gpxpy](https://github.com/tkrajina/gpxpy) -- GPX file parser
+
+_!! work in progress !!_