fix call same routes more once.

• refactor of routes
• fix parameter with null

What's Changed

• Allow setting headers that will appear in responses by @ramsey in #32

Full Changelog: v2.0.2...v2.1.0

remove laravel depends

Add .gitattributes and ignore .phpunit.cache/

@ramsey
remove Process class

• Instead of using the Laravel Http facade, this PR uses PHP's file_get_contents() with the HTTP stream wrapper and a stream context to make requests to the local test server.

thanks @ramsey