send iso and unix timestamp

src/groups.js

@@ -208,7 +208,7 @@ var async = require('async'),
 			results.base.name = validator.escape(results.base.name);
 			results.base.description = validator.escape(results.base.description);
 			results.base.userTitle = validator.escape(results.base.userTitle);
-			results.base.createtime = utils.toISOString(results.base.createtime);
+			results.base.createtimeISO = utils.toISOString(results.base.createtime);
 			results.base.members = results.users.filter(Boolean);
 			results.base.pending = results.pending.filter(Boolean);
 			results.base.count = numUsers || results.base.members.length;