Added usage for the GUI and redid some TODOs

README.md

@@ -1,11 +1,11 @@
 # RetroUFO
-[![Platform](https://img.shields.io/badge/platform-linux%20%7C%20windows-yellow.svg)](https://www.youtube.com/watch?v=NLGoKxh8Aq4)
+[![Platform](https://img.shields.io/badge/platform-linux%20%7C%20macos-yellow.svg)](https://www.youtube.com/watch?v=NLGoKxh8Aq4)
 [![Python Version](https://img.shields.io/pypi/pyversions/Django.svg)](https://www.python.org/downloads/) [![License.](https://img.shields.io/github/license/mashape/apistatus.svg)](https://opensource.org/licenses/MIT)
 
 A ~~messy~~ Python script that grabs the latest version of every libretro core from the [build bot](https://buildbot.libretro.com/).  
 
 ***
-### Usage
+### Usage-CLI
 
 Just run the script with _Python 3_:
 
@@ -21,6 +21,28 @@ If you are more of a advance user, and want to do things a bit more manually, yo
 python3 ./RetroUFO.py --help
 ```
 
+### Usage-GUI
+
+The GUI script uses [Qt for Python](https://wiki.qt.io/Qt_for_Python) ([PySide2](https://pypi.org/project/PySide2/)). So you can make sure you have that package installed by running:  
+```bash
+pip3 install --user PySide2
+```
+After that you can just run the script like so:
+```bash
+python3 ./RetroUFO_GUI.py
+```
+
+You can then just click the `Grab Cores` button at the bottom and then you should be all set.
+
+<IMG_HERE>
+
+If you would like to grab cores for a different platform or architecture you can override which supported cores it grabs.
+
+<IMG_HERE>
+
+If you have your core directory set somewhere special you can override where the cores extract to.
+
+<IMG_HERE>
 
 ***
 ### TO-DO
@@ -32,5 +54,6 @@ python3 ./RetroUFO.py --help
 - ~~Auto detect platform & architecture~~
 - Download progress bar
 - ~~Keep downloaded archives~~
-- Give better console output
+- ~~Make GUI~~~
 - Real error handling
+- Support for ARM detection