Update composer

- Add autoloader
 - Add PHPUnit
 - Add ApiGen
 - Add CodeSniffer

version: '2'
services:
    webserver:
        image: php
        ports:
            - 3000:80
        volumes:
            - ./www:/www
        command: php -S 0.0.0.0:80 -t /www

web/app/composer.json

@@ -1,8 +1,22 @@
 {
-    "require": {},
+    "require": {
+
+    },
+    "require-dev": {
+        "squizlabs/php_codesniffer": "2.*",
+        "phpunit/phpunit": "5.7.*",
+        "apigen/apigen": "master"
+    },
     "autoload": {
         "psr-4": {
-            "App\\": ["src/", "tests/"]
+            "App\\Acme\\": "src/"
         }
+    },
+    "autoload-dev": {
+        "psr-4": {
+            "AppTest\\Acme\\": "test/"
         }
+    },
+    "minimum-stability": "dev",
+    "prefer-stable": true
 }