Update usage instructions in README.md for clarity and conciseness

README.md

@@ -35,9 +35,10 @@ To use the project, you need to:
 
 1.  Configure the budget in `src/manager/budget_manager.py`.
 2.  Create tools and place them in the `src/tools/default_tools` or `src/tools/user_tools` directories.
-3.  Create agents using the `AgentCreator` tool or the `AgentManager` class.
-4.  Invoke agents using the `AskAgent` tool or the `AgentManager` class.
-5.  Manage tools and agents using the `ToolManager` and `AgentManager` classes.
+
+Please note that by default, we do provide a lot of pre-defined tools and agents, so you may not need to create your own tools unless you have specific requirements.
+
+3. By default, on running `python main.py`, you would need to authenticate with Auth0. But, this can be overriden through the CLI argument `--no-auth` to skip authentication.
 
 ## Contributing