修复20170915版本号

@@ -242,7 +242,7 @@ return [
     ],
     //FastAdmin配置
     'fastadmin'              => [
-        'version'   => '1.0.0.20170816_beta',
+        'version'   => '1.0.0.20170915_beta',
         'api_url'   => 'http://api.fastadmin.net',
     ],
 ];