private void ReleaseNotesButtonPressed( GUIBase sender)
{
AssetVersion localVersion = AssetUpdater.Instance.GetLocalVersion( sender.tag);
AssetVersion remoteVersion = AssetUpdater.Instance.GetRemoteVersion( sender.tag);
AssetVersion version = remoteVersion != null && localVersion.Version < remoteVersion.Version ?
remoteVersion : localVersion;
string title = version.Name + " (" + version.Version + ") Release Notes";
EditorUtility.DisplayDialog( title, version.Notes, "OK");
}