move default config inline, check for config file before loading

this allows you to use XRay without creating a config file using its default settings (currently only caching disabled)

composer.json

@@ -9,7 +9,6 @@
   },
   "autoload": {
     "files": [
-      "config.php",
       "lib/helpers.php",
       "controllers/Main.php",
       "controllers/Parse.php",

config.production.php

@@ -1,5 +1,4 @@
 <?php
 class Config {
-  public static $base = 'https://xray.p3k.io';
   public static $cache = true;
 }

config.template.php

@@ -1,5 +1,4 @@
 <?php
 class Config {
-  public static $base = 'http://example.com';
   public static $cache = false;
 }

public/index.php

@@ -1,9 +1,18 @@
 <?php
-chdir('..');
+chdir(dirname(__FILE__).'/..');
 include('vendor/autoload.php');
 
 register_shutdown_function('shutdown');
 
+// Load config file if present, otherwise use default
+if(file_exists(dirname(__FILE__).'/../config.php')) {
+  require 'config.php';
+} else {
+  class Config {
+    public static $cache = false;
+  }
+}
+
 use Symfony\Component\HttpFoundation\Request;
 use Symfony\Component\HttpFoundation\Response;
 $router = new League\Route\RouteCollection;