Add Jim Evans to acknowledgements.

He's landed some tests for the spec into the WTP project
and also contributed PRs and suggestions.

Author: shs96c

webdriver-spec.html

@@ -9025,6 +9025,7 @@ <h2>Acknowledgements</h2>
  <!-- James Graham --> James Graham,
  <!-- Jason Juang --> Jason Juang,
  <!-- Jason Leyba --> Jason Leyba,
+ <!-- Jim Evans --> Jim Evans,
  <!-- John Jansen --> John Jansen,
  <!-- Luke Inman-Semerau --> Luke Inman-Semerau,
  <!-- Maja Frydrychowicz --> <a href=http://www.erranderr.com/>Maja Frydrychowicz</a>,