added the necessary OWIN Katana NuGets which are currently in pre release
added new project for Infrastructure
Amended the namespace for new Infrastructure project
Added Katana.WebApi/Startup.cs to Infrastructure so that we can reuse it across projects
added a quick bit of code to test pricing and ensure we can access controller methods
moved WebApp startup to a Bootstrap file in Infrastructure
refactored pricing service, more to come... must add IoC to project to clean up dependencies and minimise coupling