Improve installation instructions

docs/installation/windows.md

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+# Installation
+
+Of the Pepper Robot Interface on Windows.
+
+Install Python 2.7.18 from [the Python website](https://www.python.org/downloads/release/python-2718/), choose the x86-64 installer (at the bottom of the page).
+
+To see if it worked:
+
+```shell
+py -2 -V
+```
+
+Which should return `Python 2.7.18`.
+
+Next, `cd` into this repository and create (and activate) a virtual environment:
+
+```bash
+cd <path to project>/
+py -2 -m pip install virtualenv
+py -2 -m virtualenv .venv
+.\.venv\Scripts\activate
+```
+
+Install the required packages with
+
+```bash
+pip install -r requirements.txt
+```
+
+Now we need to install the NaoQi SDK into our virtual environment, which we need to do manually. Download the SDK from [Aldebaran](https://community-static.aldebaran.com/resources/2.5.5/sdk-python/pynaoqi-python2.7-2.5.5.5-win32-vs2013.zip), [Web Archive](https://web.archive.org/web/20240120111043/https://community-static.aldebaran.com/resources/2.5.5/sdk-python/pynaoqi-python2.7-2.5.5.5-win32-vs2013.zip) or [twirre.io](https://twirre.io/files/pynaoqi-python2.7-2.8.6.23-win64-vs2015-20191127_152649.zip).
+
+Extract to `.\.venv\Lib\site-packages`.
+
+Create a file `.venv\Lib\site-packages\pynaoqi-python2.7.pth`, put the full path of `pynaoqi-python2.7-2.8.6.23-win64-vs2015-20191127_152649\lib\python2.7\Lib\site-packages` in there.
+
+Test if it worked by running:
+
+```bash
+python -c "import qi; print(qi)"
+```
+
+You should now be able to run this project.
+
+See the README for how to run.