Add a test for reification of invalid model
Stuff the scenario option into the existing opts hash
Ensure that expected validations are run on `reify`
Support custom scenario option in .first and .all calls
Add scenarios to Readme
Fixed validations-creation args parsing and length-validation, added tests
Stripped superfluous whitespace
Create explcit scenario wrapper for validations
Default to 'create' and 'update' scenarios only for validations
Generic Validations section for docs