Move documentation into repository (#613)

docs/index.md

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+
+# Alliance Auth
+
+Alliance service auth to help large scale alliances manage services. Built for "The 99 Percent" open for anyone to use
+
+# Installing
+
+[Ubuntu Setup Guide](installation/auth/ubuntu.md)
+
+For other distros, adapt the procedure and find distro-specific alternatives for the [dependencies](installation/auth/dependencies.md)
+
+# Using
+
+See the [Quick Start Guide](installation/auth/quickstart.md)
+
+# Troubleshooting
+
+Read the [list of common problems.](maintenance/troubleshooting.md)
+
+# Upgrading
+
+As AllianceAuth is developed, new features are added while old bugs are repaired. It’s good practice to keep your instance of AllianceAuth up to date.
+
+Some updates require specific instructions. Refer to their entry in the [changelog](maintenance/changelog.md)
+
+In general, the update process has 4 steps:
+ - download the latest code
+ - generate new models in the database
+ - update current models in the database
+ - rebuild web cache
+
+To perform each of these steps, you’ll need to be working from the console in the AllianceAuth directory. Usually `cd ~/allianceauth`
+
+Start by pulling the code changes:
+
+    git pull
+
+Modify settings.py according to the changelog.
+
+For an automated upgrade, run the script:
+
+    bash update.sh
+
+For a manual upgrade, execute the commands in this order:
+
+    sudo pip install -r requirements.txt
+
+    python manage.py migrate
+
+    python manage.py collectstatic
+
+
+```eval_rst
+.. toctree::
+    :maxdepth: 3
+    :caption: Contents
+
+    features/index
+    installation/index
+    maintenance/index
+    development/index
+```