moved swagger sample API java/groovy files to /src directory (wasn't working in Grails 2.2.1 under grails-app/resources).
deleted original files that have been moved.
upgraded application to latest Grails version (2.2.1)
added grails wrapper scripts so don't need to install grails to run the project
updated readme documentation
Merge pull request #169 from jbarmash/master

Updates Grails sample project to Grails 2.2.1 and added grails wrapper so you don't need to install grails framework to run the project