adding more upgrade info

b7534190 · Petr Skoda · 44f2977c · b7534190
Commit b7534190 authored Mar 24, 2010 by Petr Skoda
--- a/mod/upgrade.txt
+++ b/mod/upgrade.txt
@@ -31,6 +31,8 @@ required changes in code:
                 move module icon to mod/xxx/pix/icon.gif
                 old global $THEME is fully replaced by $OUTPUT
                 create plugin renderers
+* migrate all javascript new coding style using YUI3+YUI2
+  (http://docs.moodle.org/en/Development:JavaScript_usage_guide)


 optional - no changes needed in older code: