Slight README improvements, change CI to windows (temp)

.github/workflows/build.yml

@@ -4,7 +4,7 @@ on: [push, pull_request]
 
 jobs:
   build:
-    runs-on: ubuntu-latest
+    runs-on: windows-latest
     steps:
     - uses: actions/checkout@v3
     - name: Cache pip

README.md

@@ -48,7 +48,9 @@ Anyone who wants to write a good/nice utility should probably look at the code i
 
 ## VSCode + PlatformIO
 
-This project can also be built, uploaded and debugged with VSCode and the PlatformIO extension. See [here](https://github.com/Community-PIO-CH32V/platform-ch32v) for details.
+This project can also be built, uploaded and debugged with VSCode and the PlatformIO extension. Simply clone and open this project in VSCode and have the PlatformIO extension installed.
+
+See [here](https://github.com/Community-PIO-CH32V/platform-ch32v) for further details.
 
 ## Quick Reference
  * Needed for programming/debugging: `SWIO` is on `PD1`