Separate responsabilities of Classes

- Refactor on PHPRouter\Route and PHPRouter\Router to accept a collection of routers. That is now more flexible and simple to manager yours routers.
- Update README.md with new form to create Routers
- Add "type" and PHPUnit like "require-dev" on composer.json file
- Update example.php file with new syntax
Remove method map() of PHPRouter\Router
Replace tabs to space on identation

- Remove file not used and triling lines and tabs of files
Merge branch 'master' of https://github.com/malukenho/PHP-Router into malukenho-master