Implemented enhanced healthpoint to display platform version and name.  Changed health endpoint from /health to /health.json.
Changes regarding feedback from PR.  Hardcoded in 'Napa' into platform name. Removed platform_name method.  Removed spec regarding that method.  Allowed '/health' and '/health.json' endpoints for identity
Merge pull request #47 from mikejahn/feature/enhanced-health-endpoint

Enhanced Health Endpoint