Include path in validation messages
Include path in validation messages

As with errors, include the path of the file which caused the validation
message.  This helps distinguish which file had the error when
validating multiple files and is the typical error message formatting
convention.

Signed-off-by: Kevin Locke <ffb4761cba839470133bee36aeb139f58d7dbaa9@kevinlocke.name>

kevinoid/swagger-spec-validator,kevinoid/swagger-spec-validator,kevinoid/swagger-spec-validator