Credits update

tapiriik/web/templates/static/credits.html

@@ -4,6 +4,7 @@
 <h1>Credits</h1>
 <ul style="list-style:none" class="credits">
 
+	<li><b><a href="https://github.com/ppkowalski">Piotr Kowalski</a></b> for writing connecting tapiriik with <a href="http://motivato.pl">Motivato</a></li>
 	<li><b><a href="https://twitter.com/hozn">Hans Lellelid</a></b> and <b><a href="http://ridewithgps.com">Cullen King</a></b> for bringing us <a href="http://ridewithgps.com">RideWithGPS</a> support</li>
 	<li><b>Todd Mosier</b> at <a href="http://zonefivesoftware.com">Zone Five Software</a> for his help with SportTracks.mobi integration</li>
 	<li><b>Cosmo Catalano</b> for his work with the Strava API</li>