Update README.md

Author: steviegt6

README.md

@@ -7,5 +7,9 @@ The `GIFBuilder` class provides methods for creating a `TextureGIF` with an arra
 
 You can load any file with frames and extract an array of `Texture2D`s to use to create an instance of a `TextureGIF`, even if it isn't a GIF!
 
-## aight bro but what's the name mean
-GIF :trollface: ![image](https://user-images.githubusercontent.com/27323911/116934434-d608e880-ac19-11eb-9ebe-99853584ebe2.png)
+## Using
+### Normal Projects
+If you want to use this in a normal project, simply download the DLL for whatever framework you're using and add it as an assembly reference.
+
+### tModLoader
+If you want to use this in a tModLoader mod, it's a little more complicated. You need to download the XNA and FNA files, add them both to your `lib` folder, keep the XNA DLL as the default name, and append `.FNA` (i.e. `ProjectStarlight.Interchange.FNA.dll`), add `ProjectStarlight.Interchange` to `dllReferences` in your `build.txt` file, and reference the XNA (`ProjectStarlight.Interchange.dll`) assembly in your mod.