[AngularJS] google indexing via sitemaps: how to?

According to  https://stackoverflow.com/questions/13499040/how-do-search-engines-deal-with-angularjs-applications (scroll to pushState answer) and   http://googlewebmastercentral.blogspot.de/2014/05/understanding-web-pages-better.html  nowadays JavaScript is executed by Google's crawler. So, I used pushState, and created a sitemap.xml and submitted this using Google's webmaster tools. 

However, this results in "45 pages submitted" and "1 page indexed". 

Anyone got experience with this? 

I tried experimenting with providing hashbang url's in the sitemap, does not seem to have any effect. The website is http://www.praktijkondersteuner.nl