I've added both snippets of code from https://tri.be/how-to-add-events-to-your-rss-feed to functions.php. Events are not displayed in the main blog loop neither are the event start and end date displaying.
When I enable "Include events in main blog loop" in the Setting, events are added to the main blog loop but not when I enter the code myself.
The <ev:startdate> and <ev:enddate> tags are being displayed in XML but not displayed in the RSS Reader
<ev:startdate>April 4, 2014 8:00 am</ev:startdate>
<ev:enddate>May 6, 2014 5:00 pm</ev:enddate>