Add basic docs about custom installs.

docs/custom_installs/customization.rst

@@ -0,0 +1,39 @@
+Customizing your install
+========================
+
+Read the Docs has a lot of :doc:`/settings` that help customize your install.
+This document will outline some of the more useful ways that these can be combined.
+
+Have a local settings file
+--------------------------
+
+If you put a file named ``local_settings.py`` in the ``readthedocs/settings`` directory, it will override settings available in the base install.
+
+Adding your own logo
+--------------------
+
+This requires 2 parts of setup. First, you need to add a custom :setting:`TEMPLATE_DIRS` setting that points at your template overrides. Then, in those template overrides you have to insert your logo where the normal RTD logo goes.
+
+Example ``local_settings.py``::
+
+    import os
+
+    # Directory that the project lives in, aka ../..
+    SITE_ROOT = '/'.join(os.path.dirname(__file__).split('/')[0:-2])
+
+    TEMPLATE_DIRS = (
+        "%s/var/custom_templates/" % SITE_ROOT, # Your custom template directory, before the RTD one to override it.
+        '%s/readthedocs/templates/' % SITE_ROOT, # Default RTD template dir
+    )
+
+Example ``base.html`` in your template overrides::
+
+    {% extends "/home/docs/checkouts/readthedocs.org/readthedocs/templates/base.html" %}
+    {% load i18n %}
+
+    {% block branding %}{% trans "My sweet site" %} {% endblock %}
+
+You can of course override any block in the template. If there is something that you would like to be able to customize, but isn't currently in a block, please `submit an issue`_.
+
+
+.. _submit an issue: https://github.com/rtfd/readthedocs.org/issues?sort=created&state=open

docs/custom_installs/index.rst

@@ -0,0 +1,11 @@
+Info about custom installs
+==========================
+
+Read the Docs is open source, which means you can run your own version of it. There are many reasons to do this, the main one being if you want a private instance. If you have to keep everything behind a firewall of VPN, this is for you.
+
+
+.. toctree::
+    :maxdepth: 2
+    :glob:
+
+    customization

docs/index.rst

@@ -57,6 +57,13 @@ Developer Documentation
     api
     api/index
 
+Custom install Documentation
+----------------------------
+.. toctree::
+    :maxdepth: 3
+
+    custom_installs/index
+
 Operations Documentation
 ------------------------
 .. toctree::