Tweak spaces around equal signs to improve compatibility with Outlook Web Access

[justin-mills-fws]

Current version of Outlook Web Access strips the formatting out of tables when there are spaces around the = in the <th style = "....> and <td style = "....> tags. It works fine with the spaces on either side of the = removed, so this PR removes those. The HTML5 spec calls for zero or more spaces, so zero should be fine.

This should close #26 (or at least my issues with it). I also included a tiny typo fix to the README.