This reproduces the StackOverFlow Error with recursive models reported
in issue #21
Fixes #15 - Stack Overflow for methods returning a response object
Fixes #21 - Stack Overflow for recursive models
also, consolidate some "should parse model" logic
update readme pom example to current version
Merge pull request #20 from ESPNMichaelKidd/master

Fix StackOverflow for methods returning a response object & for recursive models
[PATCH] use org.sonatype.swagger groupId for patched artifact
[PATCH] Restore Java6 compatibility