DOC: Documentation for iOS installation.

CHANGELOG.md

@@ -18,6 +18,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
   whether server may use the cache for the query execution.
 * Added `cached` property to the `Query` class which indicates whether the
   server used the cache for the execution of the last query.
+* Documentation moved from wiki to this repository and enhanced.
 
 ### Changed ###
 

README_SETUP.md

@@ -30,6 +30,23 @@ packages you will ever need out of the box.  If you prefer, you may also install
 After installation, open an Anaconda prompt from the Windows menu and continue in the [Generic
 installation](#generic-installation) section.
 
+#### iOS ####
+
+If there is no Python 3 installed yet, there are two main ways to obtain it: Either get the binary
+package from [python.org](https://www.python.org/downloads/) or, for advanced users, install via [Homebrew](https://brew.sh/).  After installation
+from python.org, it is recommended to also update the TLS certificates for Python (this requires
+administrator rights for your user):
+
+```sh
+# Replace this with your Python version number:
+cd /Applications/Python\ 3.9/
+
+# This needs administrator rights:
+sudo ./Install\ Certificates.command
+```
+
+After these steps, you may continue with the [Generic installation](#generic-installation).
+
 #### Generic installation ####
 
 To install PyCaosDB locally, use `pip3` (also called `pip` on some systems):