Introducing HttpMethodRequestHandler.

This new request handler is a configurable request handler for common HTTP methods. It replaces the old Get, Put and Post request handlers which were actually duplicate code.
merging 'feature/delete-method' into develop
updating poms for 0.4.2 release
Merge branch 'release/0.4.2' into develop
updating poms for 0.4.3-SNAPSHOT development
updating poms for 0.5 release
updating poms for 0.5 release
Merge branch 'release/0.5' into develop
updating poms for 0.6-SNAPSHOT development