Fixes for better IE compatibility.

Added CSS to remove ugly borders from image links. Added doctype to support centering of content.
Added warning if user is running IE.

Also fixed a couple of html issues that prevented IE from displaying ordered lists correctly.
Merge branch 'master' into issue_56
Fixed IE warning message.
Fixed unit test expected output.
Merge pull request #81 from jrrideout/issue_56

Fixes for IE.