update readme

Author: mstop4

README.md

@@ -1,3 +1,13 @@
 # Useful GML Scripts
 
-A collection of useful, reuseable GML script I've made over the years.
+A collection of useful, reuseable GML script I've made over the years.
+
+The scripts are divided into two categories:
+
+## Standalone
+
+A library of largely independent helper functions and structs that are easily integrated into any project.
+
+## Components
+
+A library of more complex prefabs. **NOTE:** *These are not 100% production-ready.*