Provide link to start.spring.io at top.

README.adoc

@@ -5,6 +5,9 @@
 :source-highlighter: prettify
 :project_id: gs-spring-boot
 This guide provides a sampling of how {spring-boot}[Spring Boot] helps you accelerate and facilitate application development. As you read more Spring Getting Started guides, you will see more use cases for Spring Boot.
+It is meant to give you a quick taste of Spring Boot. If you want to create your own Spring Boot-based project, visit 
+http://start.spring.io/[Spring Initializr], fill in your project details, pick your options, and you can download either
+a Maven build file, or a bundled up project as a zip file.
 
 == What you'll build
 You'll build a simple web application with Spring Boot and add some useful services to it.