Added examples of constraints for form fields
Added examples of constraints for form fields

Fixes #133.

alex-slynko/tile-generator,cf-platform-eng/tile-generator,alex-slynko/tile-generator,alex-slynko/tile-generator,cf-platform-eng/tile-generator,cf-platform-eng/tile-generator,cf-platform-eng/tile-generator,alex-slynko/tile-generator