Added credit.

readme.html

@@ -848,6 +848,9 @@ their skills.  Special thanks go out to:</p>
   <li>Keith Bauer, for his invaluable help with porting and maintaining GLFW on
   Mac OS X, and for his many ideas</li>
 
+  <li>John Bartholomew, for adding proper version number and soname to the
+  shared library build</li>
+
   <li>Lambert Clara, for a bug fix for the modes test</li>
 
   <li>Jarrod Davis, for the Delphi port of GLFW</li>