Add documentation on perfoming system upgrades

docs/index.rst

@@ -11,6 +11,7 @@ InvenTree Source Documentation
    Configuration<config>
    Deployment<deploy>
    Migrate Data<migrate>
+   Update InvenTree<update>
    Backup and Restore<backup>
    Modal Forms<forms>
    Tables<tables>

docs/update.rst

@@ -0,0 +1,37 @@
+Update InvenTree
+================
+
+.. toctree::
+   :titlesonly:
+   :maxdepth: 2
+   :caption: Update
+   :hidden:
+
+Adminitrators wishing to update InvenTree to the latest version should follow the instructions below. The commands listed below should be run from the InvenTree root directory.
+
+.. important::
+   It is advisable to backup the InvenTree database before performing these steps.
+
+Stop Server
+-----------
+
+Stop the InvenTree server (e.g. gunicorn)
+
+Update Source
+-------------
+
+Update the InvenTree source code to the latest version.
+
+``git pull origin master``
+
+Perform Migrations
+------------------
+
+Updating the database is as simple as calling the makefile target:
+
+``make migrate``
+
+Restart Server
+--------------
+
+Restart the InvenTree server