Update readme

README.rst

@@ -295,6 +295,25 @@ rendering the above settings useless.
 To completely disable the feature, set ``TEXT_HTML_SANITIZE = False``.
 
 
+Usage outside django CMS
+------------------------
+
+django CMS Text can be used without django CMS installed. Without django CMS it
+offers the ``HTMLField`` and ``HTMLFormField`` classes which can be used by any
+Django model or form.
+
+If django CMS is not installed with django CMS Text, add the following to your
+``MIGRATION_MODULES`` setting::
+
+    MIGRATION_MODULES = [
+        ...,
+        "djangocms_text": None,
+        ...
+    ]
+
+This will prevent the migration of the models for django CMS plugins.
+
+
 Development
 ===========