+ added stub document for export documentation and linked it from index.rst

Resources/doc/index.rst

@@ -28,6 +28,7 @@ Reference Guide
    reference/action_create_edit
    reference/action_show
    reference/action_delete
+   reference/action_export
    reference/saving_hooks
    reference/form_types
    reference/form_help_message

Resources/doc/reference/action_export.rst

@@ -0,0 +1,26 @@
+The Export action
+===============
+
+.. note::
+
+    This document is a stub representing a new work in progress. If you're reading 
+    this you can help contribute, **no matter what your experience level with Sonata 
+    is**. Check out the `issues on Github`_ for more information about how to get involved.
+
+This document will cover the Export action and related configuration options.
+
+
+Basic configuration
+-------------------
+
+To do:
+
+- any global (yml) options that affect the export actions
+- how to disable (some of) the default formats
+- how to add new export formats
+- customising the templates used to render the output
+- customising the query used to fetch the results
+
+
+
+.. _`issues on Github`: https://github.com/sonata-project/SonataAdminBundle/issues/1519