Use config the get User model

See #136

src/Generator.php

@@ -50,6 +50,10 @@ class Generator
         $this->extra = array_merge($this->extra, $this->config->get('laravel-ide-helper::extra'));
         $this->magic = array_merge($this->magic, $this->config->get('laravel-ide-helper::magic'));
         $this->interfaces = array_merge($this->interfaces, $this->config->get('laravel-ide-helper::interfaces'));
+        // Make all interface classes absolute
+        foreach ($this->interfaces as &$interface) {
+            $interface = '\\' . ltrim($interface, '\\');
+        }
         $this->helpers = $helpers;
     }
 
@@ -150,10 +154,6 @@ class Generator
             }
         }catch (\Exception $e) {}
 
-        // Make all interface classes absolute
-        foreach ($this->interfaces as &$interface) {
-            $interface = '\\' . ltrim($interface, '\\');
-        }
     }
 
     /**

src/config/config.php

@@ -1,4 +1,6 @@
-<?php
+<?php 
+
+use Illuminate\Support\Facades\Config;
 
 return array(
 
@@ -84,7 +86,7 @@ return array(
     */
     
     'interfaces' => array(
-        '\Illuminate\Auth\UserInterface' => '\User',
+        '\Illuminate\Auth\UserInterface' => Config::get('auth.model', 'User'),
     )
 
 );