Add header to first page

Name: Shawn Henry for EOWG
Email: shawn@w3.org
Affiliation: W3C WAI EOWG
Document: UW
Item Number: (none selected)
Part of Item: Intent
Comment Type: general comment
Summary of Issue: Add header to first page
Comment (Including rationale for any proposed change):
Add the header that is on the subpages to the first page <http://www.w3.org/TR/UNDERSTANDING-WCAG20/>

Rationale: Provide consistent navigation and design across different Web pages in the same document. Reinforce that the pages are related.

Proposed Change:
Include the header that is on the subpages on the first page <http://www.w3.org/TR/UNDERSTANDING-WCAG20/> (with \"Understanding WCAG 2.0\" at the top left and \'buttons\' for Intro and Next...)