Add new sponsor pmpmg.com

Signed-off-by: Isaac Bennetch <bennetch@gmail.com>

Author: ibennetch

pmaweb/templates/sponsors.html

@@ -132,6 +132,7 @@ <h3>Bronze sponsors</h3>
 <a href="https://poprey.com">Poprey</a>
 <a href="https://earthweb.com">Earthweb</a>
 <a href="https://www.honrev.com">HONREV Honest Reviews</a>
+<a href="https://www.pmpmg.com/">Law Firm Marketing Services</a>
 </div>
 
 <h2 id="conditions">Becoming a sponsor</h2>