Moved language select to appDetails method

Per recommendation #74 (comment)

Author: jastend

src/Syntax/SteamApi/Client.php

@@ -107,7 +107,6 @@ protected function setUpClient(array $arguments = [])
         $parameters = [
             'key'    => $this->apiKey,
             'format' => $this->apiFormat,
-            'l' => \Config::get('steam-api.steamLang')
         ];
 
         if (! empty($arguments)) {

src/Syntax/SteamApi/Steam/App.php

@@ -15,7 +15,7 @@ public function __construct()
         $this->interface = 'api';
     }
 
-    public function appDetails($appIds)
+    public function appDetails($appIds, $language = 'english')
     {
         // Set up the api details
         $this->method  = 'appdetails';
@@ -24,6 +24,7 @@ public function appDetails($appIds)
         // Set up the arguments
         $arguments = [
             'appids' => $appIds,
+            'l' => $language,
         ];
 
         // Get the client

src/config/config.php

@@ -7,11 +7,5 @@
 	 * Once you get your key, add it here.
 	*/
 	'steamApiKey' => env('STEAM_API_KEY'),
-	
-	/**
-	 * Localized language paramter
-	 * Steam will default back to English if the requested language is not available
-	*/
-	'steamLang' => env('STEAM_LANG', 'english'),
 
 );