Destroyed Getting started (markdown)
Updated _Sidebar (markdown)
Destroyed The Data Model (markdown)
Updated Creating an EntityListener (markdown)
Updated Creating an AttributeListener (markdown)
Fixed some directories
Updated URL correctly
Updated URl for gradle
Updated Adding, getting and removing attributes (markdown)
Updated Getting started (markdown)
Updated Extending or customising JALSE (markdown)
Created Extending or customising JALSE (markdown)
Updated Future changes (markdown)
Created Future changes (markdown)