Adds README to stock_user_default_warehouse_base

Also removes class reference in super()

stock_user_default_warehouse_base/README.rst

@@ -0,0 +1,64 @@
+===============================
+Default Stock Warehouse on User
+===============================
+
+.. !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+   !! This file is generated by oca-gen-addon-readme !!
+   !! changes will be overwritten.                   !!
+   !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+
+.. |badge1| image:: https://img.shields.io/badge/maturity-Beta-yellow.png
+    :target: https://odoo-community.org/page/development-status
+    :alt: Beta
+.. |badge2| image:: https://img.shields.io/badge/licence-AGPL--3-blue.png
+    :target: http://www.gnu.org/licenses/agpl-3.0-standalone.html
+    :alt: License: AGPL-3
+.. |badge3| image:: https://img.shields.io/badge/github-akretion%2Fodoo--usability-lightgray.png?logo=github
+    :target: https://github.com/akretion/odoo-usability/tree/12.0/stock_user_default_warehouse_base
+    :alt: akretion/odoo-usability
+
+|badge1| |badge2| |badge3| 
+
+With this module, you will be able to configure a default warehouse in the preferences of the user.
+
+This module doesn't do anything by itself. It should be used together with at least one of the following modules:
+
+* stock_user_default_warehouse_sale
+* stock_user_default_warehouse_purchase
+* stock_user_default_warehouse_mrp
+
+**Table of contents**
+
+.. contents::
+   :local:
+
+Bug Tracker
+===========
+
+Bugs are tracked on `GitHub Issues <https://github.com/akretion/odoo-usability/issues>`_.
+In case of trouble, please check there if your issue has already been reported.
+If you spotted it first, help us smashing it by providing a detailed and welcomed
+`feedback <https://github.com/akretion/odoo-usability/issues/new?body=module:%20stock_user_default_warehouse_base%0Aversion:%2012.0%0A%0A**Steps%20to%20reproduce**%0A-%20...%0A%0A**Current%20behavior**%0A%0A**Expected%20behavior**>`_.
+
+Do not contact contributors directly about support or help with technical issues.
+
+Credits
+=======
+
+Authors
+~~~~~~~
+
+* Akretion
+
+Contributors
+~~~~~~~~~~~~
+
+* Alexis de Lattre <alexis.delattre@akretion.com>
+* Daniel Luque <dev@actgrupo.com>
+
+Maintainers
+~~~~~~~~~~~
+
+This module is part of the `akretion/odoo-usability <https://github.com/akretion/odoo-usability/tree/12.0/stock_user_default_warehouse_base>`_ project on GitHub.
+
+You are welcome to contribute.