add note about http-equiv being first in the head section

diff --git a/docs/index.html b/docs/index.html
index 59ac6ad..1c3657e 100644 (file)
--- a/docs/index.html
+++ b/docs/index.html
@@ -395,7 +395,7 @@
   </head>
 </pre>
 
-<p>(This is surprisingly tricky because the HTML5 doctype breaks excanvas in IE8. See <a href="https://groups.google.com/group/dygraphs-users/browse_thread/thread/c60709e04bc7fe5f#">this discussion</a> for details.)</p>
+<p>(This is surprisingly tricky because the HTML5 doctype breaks excanvas in IE8. See <a href="https://groups.google.com/group/dygraphs-users/browse_thread/thread/c60709e04bc7fe5f#">this discussion</a> for details. Note that the &lt;meta http-equiv&hellip;&gt; line must appear <i>first</i> in the &lt;head&gt; section for this to work propertly.)</p>
 
     <p>While VML emulation sounds like it would be slow, it works well in practice for most charts.</p>