[1.7.0] Change ->Revision member variable to a legit configuration directive. Start writing tutorial for customization.

git-svn-id: http://htmlpurifier.org/svnroot/htmlpurifier/trunk@1171 48356398-32a2-884e-a903-53898d9a118a

tests/HTMLPurifier/DefinitionCacheHarness.php

@@ -13,7 +13,6 @@ class HTMLPurifier_DefinitionCacheHarness extends UnitTestCase
         $config = new HTMLPurifier_ConfigMock($this);
         $config->setReturnValue('getBatchSerial', $serial, array('Test'));
         $config->version = '1.0.0';
-        $config->revision = 1;
         return $config;
     }