Fix user requirement in setup, cleanup.

src/Commands/Setup.php

@@ -61,13 +61,6 @@ class Setup implements Command {
             $this->logger->info("New private key successfully saved.");
         }
 
-        $user = $args->get("user") ?: "www-data";
-        $userInfo = posix_getpwnam($user);
-
-        if (!$userInfo) {
-            throw new RuntimeException("User doesn't exist: '{$user}'");
-        }
-
         $acme = new AcmeService(new AcmeClient($server, $keyPair), $keyPair);
 
         $this->logger->info("Registering with ACME server " . substr($server, 8) . " ...");

src/Config.php

@@ -0,0 +1,15 @@
+<?php
+
+namespace Kelunik\AcmeClient;
+
+class Config {
+    private $config;
+
+    public function __construct(array $config) {
+        $this->config = $config;
+    }
+
+    public function get($key) {
+        return isset($this->config[$key]) ? $this->config[$key] : null;
+    }
+}

src/Configuration.php

@@ -1,27 +0,0 @@
-<?php
-
-namespace Kelunik\AcmeClient;
-
-use RuntimeException;
-
-class Configuration {
-    private $config;
-
-    public function __construct($file) {
-        $json = file_get_contents($file);
-
-        if (!$json) {
-            throw new RuntimeException("Couldn't read config file: '{$file}'");
-        }
-
-        $this->config = json_decode($json);
-
-        if (!$this->config) {
-            throw new RuntimeException("Couldn't read JSON: '{$json}'");
-        }
-    }
-
-    public function get($key) {
-        return isset($this->config->{$key}) ? $this->config->{$key} : null;
-    }
-}

src/functions.php

@@ -1,16 +0,0 @@
-<?php
-
-namespace Kelunik\AcmeClient;
-
-function commandToClass($command) {
-    return __NAMESPACE__ . "\\Commands\\" . ucfirst($command);
-}
-
-function getServer(Configuration $config = null) {
-    if ($config === null) {
-        $path = dirname(__DIR__) . "/data";
-        $config = new Configuration($path . "/account/config.json");
-    }
-
-    return $config->get("server");
-}