Add a section about ports testing using Tinderbox to the 'Testing' chapter

of the Porters Handbook.

Reviewed by:	pav, remko
Approved by:	pav

en_US.ISO8859-1/books/porters-handbook/book.sgml

@@ -7004,6 +7004,23 @@ post-install:
 	  stripped of <makevar>DESTDIR</makevar>, as all these files are
 	  processed of a context of target environment.</para>
       </sect1>
+      
+      <sect1 id="testing-tinderbox">
+        <title>Tinderbox</title>
+
+        <para>If you're an avid ports contributor, you might want to take a
+          look at <application>Tinderbox</application>.  It is a powerful
+          system for building and testing ports based on the scripts used on
+          <link linkend="build-cluster">Pointyhat</link>.  You can install
+          <application>Tinderbox</application> using
+          <filename role="package">misc/tinderbox</filename> port.  Be sure
+          to read supplied documentation since the configuration is not
+          trivial.</para>
+
+        <para>Visit the <ulink url="http://tinderbox.marcuscom.com/">Tinderbox website</ulink>
+          for more details.</para>
+
+      </sect1>
   </chapter>
 
     <chapter id="port-upgrading">