TASK: Add documentation for new feature

Relates: #41

Documentation/source/configuration.rst

@@ -165,6 +165,28 @@ Using ``runtime-set``:
 
     --runtime-set removedConstantConfigFiles "/Some/Absolute/Path/*.yaml"
 
+.. _configuration-removedClassConfigFiles:
+
+removedClassConfigFiles
+^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+Configure where to look for configuration files defining the removed classes. Default is
+``Configuration/Removed/Classes/*.yaml`` inside the standard itself. We already try to deliver as
+much as possible. Globing is used, so placeholders like ``*`` are possible, see
+https://secure.php.net/manual/en/function.glob.php
+
+Using :file:`ruleset.xml`:
+
+.. code:: xml
+
+    <config name="removedClassConfigFiles" value="/Some/Absolute/Path/*.yaml"/>
+
+Using ``runtime-set``:
+
+.. code:: bash
+
+    --runtime-set removedClassConfigFiles "/Some/Absolute/Path/*.yaml"
+
 .. _configuration-removedTypoScriptConfigFiles:
 
 removedTypoScriptConfigFiles

Documentation/source/features.rst

@@ -96,13 +96,16 @@ Check for removed calls
 
 Also we check for the following deprecated calls:
 
-Check for usage of *removed functions* in general. The functions are configured via yaml files. The
+Check for usage of *removed PHP functions* in general. The functions are configured via yaml files.
-location of them is configurable, default is inside the standard itself, and we try to deliver all
+The location of them is configurable, default is inside the standard itself, and we try to deliver
-information. For configuration options see :ref:`configuration-removedFunctionConfigFiles`.
+all information. For configuration options see :ref:`configuration-removedFunctionConfigFiles`.
 
-Check for usage of *removed constants*. The constants are configured in same way as removed
+Check for usage of *removed PHP constants*. The constants are configured in same way as removed
 functions. For configuration options see :ref:`configuration-removedConstantConfigFiles`.
 
+Check for usage of *removed PHP classes*. The classes are configured in same way as removed
+functions. For configuration options see :ref:`configuration-removedClassConfigFiles`.
+
 
 Further checks
 --------------