Add custom links to app documentation

docs/index.rst

@@ -1,18 +1,12 @@
-.. InvenTree documentation master file, created by
+InvenTree's Django Documentation
-   sphinx-quickstart on Sat Apr 27 15:45:39 2019.
+================================
-   You can adapt this file completely to your liking, but it should at least
-   contain the root `toctree` directive.
 
-Welcome to InvenTree's documentation!
+This documentation is auto-generated from the `InvenTree codebase <https://github.com/InvenTree/InvenTree>`_
-=====================================
 
 .. toctree::
+   :titlesonly:
    :maxdepth: 2
    :caption: Contents:
    :hidden:
 
    InvenTree <introduction>
-
-
-* :ref:`genindex`
-* :ref:`modindex`

docs/introduction.rst

@@ -1,4 +1,18 @@
-Introduction
+InvenTree
-============
+=========
 
-This is a test
+InvenTree is an open source inventory management system which provides powerful low-level part management and stock tracking functionality.
+
+The core of the InvenTree software is a Python/Django database backend whi
+
+
+Django Apps
+===========
+
+The InvenTree Django ecosystem provides the following 'apps' for core functionality:
+
+* `InvenTree </api/InvenTree/index.html>`_ - High level management functions
+* `Build </api/build/index.html>`_ - Part build projects
+* `Company </api/company/index.html>`_ - Company management (suppliers / customers)
+* `Part </api/part/index.html>`_ - Part management
+* `Stock </api/stock/index.html>`_ - Stock management