document installation path via conda-forge (#149)

* install via conda-forge

Co-authored-by: Lukas Kämmerling <github@lukas-kaemmerling.de>

Author: s-m-e

docs/installation.rst

@@ -23,6 +23,18 @@ you through the process.
 .. _Python installation guide: http://docs.python-guide.org/en/latest/starting/installation/
 
 
+Via conda (Third-Party)
+---------
+
+Hetzner Cloud Python is also available as a ``conda``-package via `conda-forge`. This package is not maintained by Hetzner Cloud and might be outdated._:
+
+.. code-block:: console
+
+    $ conda install -c conda-forge hcloud
+
+.. _conda-forge: https://conda-forge.org/
+
+
 From sources
 ------------