1st revision file uploads. Functional. TODO: Adds model FileUpload
Validator - Install/Config PHPSpec & 1st Spec. 1st round refactor.

- Adds composer.json -> phpspec/phpspec, .gitignore
- Basic phpspec.yml
    - Sets src directory
- spec/MyClasses/Validation/ValidatorSpec.php (newly added spec)
- MyClasses/Validation/Validator.php (existing class. minor refactor)
Validator - Prepends 'validate_' to validate methods. Updates 1/3 usages

- $callable_rule = $this->callable_prefix . $callable_rule;
- validate_not_empty
- validate_email
- Updates session/create. fixes unresolved variables
Validator - TDD Refactorage. Adds Methods/Tests. Now returns $this.

Adds methods to Validation\Validator
- hasErrors()
- hasValidData()
- clearValidations()

Adds/Modifies Tests
- Now uses matchers should[Not]HaveValidData()
- Adds it_allows_multiple_validation_rules_per_field()