Using schemas for validation.
Dependency for tv4 package added.
Watching config files.
Adding the schemas directory path.
Using nconfig to get the schemas directory path.
Addint tv4-formats package added to format dates types.
Validating dates with tv4 and tv4-formats.
Adding more tests for setting properties.
The EventInfo class receives 3 parameters instead of an object.
Improving tests, describe and it texts.