New Validator Design

[jpotts18]

1. Run validator.validate()
2. Run a method that might check any preconditions by calling validationWillRun() - Support for other input fields #34
3. Validate fields
   • Run Sanitizers - mentioned in text in UITextField can be prepared based on preparators before validation #64
   • Validate each field
4. Call validator.validationSuccessful() or validator.validationFailed() but make them optional - Make validationSuccess() optional #44
5. Run a method that checks any postconditions by calling validationDidRun()

[davepatterson]

Sounds like a good idea. I will upload a pull request with suggestive implementation of this by tomorrow.