Make release notes generic to point online

Author: brianjmiller

TinCan/TinCan.nuspec

@@ -11,7 +11,7 @@
     <iconUrl>http://tincanapi.com/wp-content/assets/icons/tincan-32x32.png</iconUrl>
     <requireLicenseAcceptance>false</requireLicenseAcceptance>
     <description>$description$</description>
-    <releaseNotes>Initial release</releaseNotes>
+    <releaseNotes>See https://github.com/RusticiSoftware/TinCan.NET/releases</releaseNotes>
     <copyright>Copyright 2014</copyright>
     <tags>TinCan TinCanAPI xAPI e-learning elearning SCORM</tags>
     <dependencies>