Link to the 'REST condition' thrid party package.

api-guide/permissions.html

@@ -185,6 +185,7 @@
 <li class="main"><a href="#third-party-packages">Third party packages</a></li>
 <li><a href="#drf-any-permissions">DRF Any Permissions</a></li>
 <li><a href="#composed-permissions">Composed Permissions</a></li>
+<li><a href="#rest-condition">REST Condition</a></li>
 
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@@ -381,6 +382,8 @@ class BlacklistPermission(permissions.BasePermission):
 <p>The <a href="https://github.com/kevin-brown/drf-any-permissions">DRF Any Permissions</a> packages provides a different permission behavior in contrast to REST framework.  Instead of all specified permissions being required, only one of the given permissions has to be true in order to get access to the view.</p>
 <h2 id="composed-permissions">Composed Permissions</h2>
 <p>The <a href="https://github.com/niwibe/djangorestframework-composed-permissions">Composed Permissions</a> package provides a simple way to define complex and multi-depth (with logic operators) permission objects, using small and reusable components.</p>
+<h2 id="rest-condition">REST Condition</h2>
+<p>The <a href="https://github.com/caxap/rest_condition">REST Condition</a> package is another extension for building complex permissions in a simple and convenient way.  The extension allows you to combine permissions with logical operators.</p>
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