Move all drivers to PSR autoload, and write tests

tests/Drivers/KatanaValetDriverTest.php

@@ -0,0 +1,27 @@
+<?php
+
+use Valet\Drivers\KatanaValetDriver;
+
+class KatanaValetDriverTest extends BaseDriverTestCase
+{
+    public function test_it_serves_katana_projects()
+    {
+        $driver = new KatanaValetDriver();
+
+        $this->assertTrue($driver->serves($this->projectDir('katana'), 'my-site', '/'));
+    }
+
+    public function test_it_doesnt_serve_non_katana_projects_with_public_directory()
+    {
+        $driver = new KatanaValetDriver();
+
+        $this->assertFalse($driver->serves($this->projectDir('public-with-index-non-laravel'), 'my-site', '/'));
+    }
+
+    public function test_it_mutates_uri()
+    {
+        $driver = new KatanaValetDriver();
+
+        $this->assertEquals('/public/about', $driver->mutateUri('/about'));
+    }
+}