Update BUILD.md

BUILD.md

@@ -5,10 +5,26 @@ TODO: can anyone make this fancier pls
 ### prerequisites:
 vscode or something similar, get it from here https://github.com/e3kskoy7wqk/Electron-for-windows-7
 
-nodejs, get it from here https://git.randomserver.top/administrator/nodejs7
+nodejs 16, one day this will work with more modern nodejs, its just that theres no point in updating it now.
 
 ### how2build
+1. clone or download this repository
+2. you open a terminal in vscode, and type the following commands
 
-you open a terminal in vscode, and type the following commands
+```npm i```
 
-TODO: complete this
+```$(npm bin)/electron-rebuild```
+
+(Windows 10+ users) To run, use the following command
+
+```npm start```
+
+If you are wondering why you can only test this on windows 10 without packaging, it is because [electron added ESM support in electron 28](https://www.electronjs.org/blog/electron-28-0#highlights), not 22.
+
+If you happen to be a windows 8.1 and under user, you can still test this, but you have to package the build using electron-builder, just run the following:
+
+```npx electron-builder```
+
+get yourself a copy of [the special electron](https://github.com/e3kskoy7wqk/Electron-for-windows-7) , after that go into the dist > win-unpackaged > resources, grab the asar file, and put it in [your special electron](https://github.com/e3kskoy7wqk/Electron-for-windows-7) (same thing, except it's in that one's resources folder)
+
+Sadly, you do have to package the asar everytime, but oh well, it's whatever at the very least you can build on your OS