User Register and Sign-in

Controllers
1) Created Routes to Views for register and sign-in
- HomeController@showSignin
- HomeController@showRegister
2) Added UsersController for manipulation of users and creation of accounts

Migrations
- Updated Created Users table added the following:
--Moved ID to unsigned for positive number storage only
--Added user_name with unique constraint
-- Updated first & last to first_name and last_name for consistency
-- Added boolean for account confirmation

Models
1) Users Model
- Added Validation Rules

Routes
- Updated to utilize home and users controllers

Views
1) Created Master.blade.php for extensions / consistency
2) Created Views for registration and sign-in

Notes:
Currently Validation rules and account creation are functional.  Next Steps:
- Filter criteria (i.e. can only access the rest of the pages if you are authenticated AND confirmed by admin)
- Add capability for admin to confirm users
- Add Password reset functionality (See blog.dev or lcp.dev for examples)
- Add landing page for successful log in