allow centering of text on paragraphs with center class
changing version and merging in upstream changes
Merge pull request #13 from jharbert/master

Allow centering of text on paragraphs with center class
Update gem owners on gemspec
Enables div, p, td alignment

Only on the same level for the moment.
Parse table-bordered class on tables
Allow nested strong and italic text on paragraphs
Bugfix: allow thead without tr

html like
<thead>
  <th>Header 1</th>
  <th>Header 2</th>
</thead>

behaves as
<thead>
  <tr>
    <th>Header 1</th>
    <th>Header 2</th>
  </tr>
</thead>