Add ZooLib to the External Projects list.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@143022 91177308-0d34-0410-b5e6-96231b3b80d8
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 </div>
 
 <!--=========================================================================-->
+<h3>The ZooLib C++ Cross-Platform Application Framework</h3>
+
+<div>
+
+<p><a href="http://www.zoolib.org/">ZooLib</a> is Open Source under the MIT
+   License. It provides GUI, filesystem access, TCP networking, thread-safe
+   memory management, threading and locking for Mac OS X, Classic Mac OS,
+   Microsoft Windows, POSIX operating systems with X11, BeOS, Haiku, Apple's iOS
+   and Research in Motion's BlackBerry.</p>
+
+<p>My current work is to use CLang's static analyzer to improve ZooLib's code
+   quality.  I also plan to set up LLVM compiles of the demo programs and test
+   programs using CLang and LLVM on all the platforms that CLang, LLVM and
+   ZooLib all support.</p>
+
+</div>
+
+<!--=========================================================================-->
 <!--
 <h3>PinaVM</h3>