Update ExtendLibraryFlow.py

ExtendLibraryFlow.py

@@ -8,6 +8,15 @@ class ExtendLibraryFlow(AbstractBossFlow):
     from the Coder, writes functions in an interactive way, test the code and append the newly written function to
     the code library.
 
+    Workflow of ExtendLibrary:
+    0. Coder calls ExtendLibrary with a goal.
+    1. MemoryReading reads logs, plan, and code library.
+    2. Planner makes a plan based on the goal.
+    3. Write code in an interactive fashion.
+    4. Test code.
+    5. Finish, writes code to the library.
+    Step 3-5 is done via prompting the controller.
+
     *Input Interface (expected input)*
     - `goal` (str): The goal from the caller (source flow, i.e. CoderFlow)
     *Output Interface (expected output)*