Rename utils.MetaData to utils.MetaDataBuilder.
Bonus exporting getLogger in utils
Changed interface to class, could not do new utils.MetaData otherwise in other modules
Added role to package.json.
Merge branch 'beta' into mike_metadata_rename

Conflicts:
	lib/MetaDataBuilder.js
Merge pull request #7 from my-koop/mike_metadata_rename

Mike metadata rename
wrapper for validate.js
Merge pull request #8 from my-koop/mike_validation_wrapper

wrapper for validate.js
Created class definitions for Errors
Ca aussi ca passe sous le radar
fix definition files
fix types
Removed deprecated methods
fix export
Merge pull request #9 from my-koop/mike_errors

Mike errors
changed validation constructor
Merge pull request #10 from my-koop/mike_custom_errors

changed validation constructor
Changed error code to be a string instead of a enum. This will be more easily extendable.
Merge pull request #11 from my-koop/mike_error_code

Erro code -> string
hotfix
Updated Express type reference casing.