readme + oops license markdown

LICENSE.md

@@ -1,7 +1,8 @@
 Avali Skin for Celeste
+
 Copyright 2023 yosh
 
-The material in `SourceCode` and `Effects` is licenced under (GPL 3.0 or Later)[https://spdx.org/licenses/GPL-3.0-or-later.html].
+The material in `SourceCode` and `Effects` is licenced under [GPL 3.0 or Later](https://spdx.org/licenses/GPL-3.0-or-later.html).
 
 The material in `Assets` is licensed under [Creative Commons Attribution Non Commercial Share Alike 4.0 International](https://creativecommons.org/licenses/by-nc-sa/4.0/), except for the following:
 - `Graphics/Atlases/Gameplay/objects/Avali/lookout/badeline*.png` are all copyright of Extremely OK Games.

README.md

@@ -0,0 +1,17 @@
+# Avali Skin
+this is the repository for the [Avali Skin mod](https://gamebanana.com/mods/375726) for celeste
+
+# Compiling
+## Libraries
+libraries are placed in `SourceCode/Libraries`. all the required libraries are listed in the makefile. the celestenet libraries can be extracted from [celestenet](https://gamebanana.com/mods/53695), and you can symlink/copy the other libraries from the celeste program directory
+## Linux
+there's a makefile in `SourceCode` that can build the dll and the required shaders for the mod:
+- DLL: `make`
+- Shaders: `make shader_c`
+
+for compiling shaders, you need `D3DCompiler_43.dll`, `d3dx9_43.dll`, and `fxc.exe`, which can be found via wine/proton installations (more details in makefile). place these directly in `SourceCode` and not in `Libraries`, since windows searched the current working directory for libraries as well
+### Linux Dependencies
+all you need are the mono headers and `mcs`, the mono c# compiler
+- Void Linux: `xbps-install mono-devel`
+## Windows
+umm uhhh ummmmm