增加文件上传类型

src/Library/Download.php

@@ -148,7 +148,7 @@ class Download
 			ob_flush();
 			flush();
 			usleep($sleep);
-			if(strlen($buf) ==0)
+			if(strlen($buf) == 0)
 			{
 				break;
 			}

src/Library/Upload.php

@@ -71,6 +71,7 @@ class Upload
         'dll' => 'application/x-msdownload',
         'dms' => 'application/octet-stream',
         'doc' => 'application/msword',
+        'docx' => 'application/msword',
         'dot' => 'application/msword',
         'dvi' => 'application/x-dvi',
         'dxr' => 'application/x-director',
@@ -216,6 +217,7 @@ class Upload
         'xlc' => 'application/vnd.ms-excel',
         'xlm' => 'application/vnd.ms-excel',
         'xls' => 'application/vnd.ms-excel',
+        'xlsx' => 'application/vnd.ms-excel',
         'xlt' => 'application/vnd.ms-excel',
         'xlw' => 'application/vnd.ms-excel',
         'xof' => 'x-world/x-vrml',