Enhancements necessary for modal

[GeorgeTaveras1231]

Blocked on #10, #11, #13, #14

Problems addressed

• Field validation styles are applied as the user is typing
• Field validation styles are not applied when the html5 'required' validation is violated
• The default (browser specific) error bubble is ugly
• When submitting form, only the first validation message is displayed.
• Asterisk is rendered on required fields

  Solutions

• Drive the validation logic with javascript. This allowed better control of the validation triggers.
• Trigger validation on field blur. This provides a better typing experience.
• Implement code to disable the default error bubble in a way that is browser compatible.

  Notable things

• Consumers of this library are expected to consume a javascript file (that will be distributed with this project) and initialize the functionality:

// in global context
XO.FormFields.init();

// in common js
require('tk-form-fields').init()

// With an in-memory form object
require('tk-form-fields').initializeForm(myForm)

• When a user interacts with a form.tk-form-fields. It will be 'initialized' with the functionality that enables the validations to work correctly. The form will be tagged with novalidate and data-tk-form-fields-initialized=true attributes. Additionally, the form will be scanned for all input elements and the validation handlers will be added.

[jazzcrazed]

Looks pretty good, but the docs don't seem to reflect using JS validation. Can you update those accordingly?

[GeorgeTaveras1231]

@jazzcrazed Sure no problem. Do you think you are ready to merge this PR once the documentation is updated?