version update

Ready to get tagged on github and pushed to moodle.org
We got many great contrivbutions from arround the world. Thanks a lot!

version.php

@@ -18,7 +18,7 @@
  */
 defined('MOODLE_INTERNAL') || die();
 
-$plugin->version  = 2015071504;
+$plugin->version  = 201508310;
 $plugin->requires = 2011080100;
 $plugin->maturity = MATURITY_STABLE;
-$plugin->release = 'Course Enrol Apply Plugin Version 1.3.1 (build 2014091000)';
+$plugin->release = 'Enrolment upon approval plugin Version 2.8-g';