docs: update README

Author: psychedelicious

README.md

@@ -1,6 +1,13 @@
 # Invoke's UI Component Library
 
-Components for Invoke's applications.
+UI Components for Invoke's applications.
+
+## Structure
+
+- `lib/components/`: Customized Chakra-UI components, some of which are pass-through wrappers of Chakra components.
+- `lib/hooks/`: A small collection of hooks used to manage some global state across the components.
+- `lib/theme/`: The Invoke Chakra theme.
+- `lib/util/`: Small utility functions used in various components.
 
 ## TODO