hints regarding the deb package; keep snapshots for one week

.gitlab-ci.yml

@@ -10,10 +10,12 @@ test:
     script:
         - make test
 
+# The latest built deb package is available under the following URL:
+#   https://git.hack-hro.de/stadtgestalten/stadtgestalten/builds/artifacts/master/raw/build/debian/export/stadtgestalten.deb?job=deb-package
 deb-package:
     script:
         - make dist-deb-packages-directory
     artifacts:
         paths:
             - build/debian/export/stadtgestalten.deb
-        expire_in: 2d
+        expire_in: 1w

README.md

@@ -4,6 +4,10 @@ Stadtgestalten is a platform destined to encourage and enable social action and
 
 ## Quick Setup
 
+### For administrators
+You may want to install the latest [snapshot build](wget https://git.hack-hro.de/stadtgestalten/stadtgestalten/builds/artifacts/master/raw/build/debian/export/stadtgestalten.deb?job=deb-package) as a deb package. Please note that this is a rather dirty package (only amd64, containing a virtualenv with python3.5 - suitable for Debian stretch).
+
+### For developers
 1. You will need [yarn](https://yarnpkg.com/lang/en/), [virtualenv](https://virtualenv.pypa.io/en/stable/), [node](https://nodejs.org/en/), [python3](https://www.python.org/), [flake8](http://flake8.pycqa.org/en/latest/), [pip](https://pip.pypa.io/en/stable/) and [make](https://www.gnu.org/software/make/) to get started. If you have all of those, you may proceed :). Otherwise see the Dependencies Section
 2. Run `make app_setup` and wait until you see something like `Starting development server at http://127.0.0.1:8000/`
 3. Visit http://127.0.0.1:8000/