Update user guide to clarify installation and setup instructions

Author: melund

docs/user-guide/index.md

@@ -4,6 +4,7 @@ The package **`anypytools`** has utilities and tools to work with the AnyBody Mo
 
 This tutorial includes the following:
 
+* [Install and setup](00_Install_and_Setup) Best way to get up and running 
 * [Getting started](01_Getting_started_with_anypytools)  Running simple AnyBody macros 
 * [Generating macros](02_Generating_macros) Generate and run complex macros
 * [Working with AnyBody output](03_Working_with_output_from_Anybody) Loading AnyOutput files and HDF5 files generated by AMS