Inserting banner only in YUI 2.9.0 user guide
Adding banner to YUI 2.8.2 documentation
Adding banner to YUI 2.8.1 documentation
Adding banner to YUI 2.8.0 documentation
Adding banner to YUI 2.7.0 documentation
Adding banner to YUI 2.6.0 documentation
Adding banner to YUI 2.5.2 documentation
Adding banner to YUI 2.5.1 documentation
Adding banner to YUI 2.5.0 documentation
Adding banner to YUI 2.4.1 documentation
Adding banner to YUI 2.4.0 documentation
Adding banner to YUI 2.3.1 documentation
Adding banner to YUI 2.3.0 documentation
Adding banner to YUI 2.2.2 documentation
Adding banner to YUI 2.2.0 documentation
Merge pull request #14 from clarle/gh-pages

Deprecation banner, take two.  
Jenny thumbs up - let's do it.