updated Upload class docs to be accurate with the * filter for allowed_types
diff --git a/user_guide/libraries/file_uploading.html b/user_guide/libraries/file_uploading.html
index 151b95c..60290b1 100644
--- a/user_guide/libraries/file_uploading.html
+++ b/user_guide/libraries/file_uploading.html
@@ -255,7 +255,7 @@
<td class="td"><strong>allowed_types</strong></td>
<td class="td">None</td>
<td class="td">None</td>
-<td class="td">The mime types corresponding to the types of files you allow to be uploaded. Usually the file extension can be used as the mime type. Separate multiple types with a pipe.</td>
+<td class="td">The mime types corresponding to the types of files you allow to be uploaded. Usually the file extension can be used as the mime type. Separate multiple types with a pipe. If '*' is used, all file types will be allowed.</td>
</tr>