Add install steps to README.md

[mavaddat]

Add simple installation instructions to the README.md.

[FurkanGozukara]

this is still lacking where are the models? can you point me links

[mavaddat]

This is still lacking. Where are the models? Can you point me to the links?

The models are installed with the requirements. Install the requirements.txt. How?

You must use Python 3, version ≤ 3.10. To do this, we will use the pip package manager. The pip utility is used to install, upgrade, and uninstall Python packages. It is also used to manage Python virtual environments and more. To start, open up a terminal or a command prompt and navigate to the directory of the Djdefrag/QualityScaler Python application. Once you are there, type the following command:

pip install -r requirements.txt

This installs all of the modules listed in our Python requirements file into our project environment.

Output: