Updated the readme files. (#35)

* Updated the readme files.

* Hopefully corrected the eula.txt check

* redirect windows users to README_WINDOWS

* Fix typo that broke everything

README.md

@@ -8,8 +8,19 @@ The modpack is available on [Curseforge](https://legacy.curseforge.com/minecraft
 
 ## Building
 
-todo
+[packwiz](https://packwiz.infra.link/) will allow you to build either a server or client pack.
+Please refer to their tutorials page for more info.
+
+## Server
+
+`serverpack/start.sh` is useful for starting a server on linux, mac or another \*nix flavor. It will also handle procuring the files for you.
+
+`serverpack/start.ps1` is the Powershell 7.4 version and will be the script windows users want to use.<br/>
+If your system is missing Powershell version 7.4 (or greater) please refer to the installation instructions provided
+by Microsoft [here](https://learn.microsoft.com/en-us/powershell/scripting/install/installing-powershell-on-windows?view=powershell-7.4).
 
 ## Credits
 
-todo
+[ursamina](https://github.com/ursamina) for modpack creation and maintenance<br/>
+[The contributors](https://github.com/GregTechCEu/GregTech-Modern-Community-Pack/graphs/contributors),
+for their useful updates to the pack.