Merge pull request #8 from waifuvault/readme-delete-note

Add notes about exceptions on invalid tokens to both delete READMEs

README.md

@@ -164,6 +164,8 @@ This function takes the following options as parameters:
 | `token` | `string` | The token of the file you wish to delete | true     |            |
 | `ct`    | `canceltoken`| An optional cancellation token that can be passed in            | false    | Standard cancellation token |
 
+> **NOTE:** `deleteFile` will only ever either return `true` or throw an exception if the token is invalid
+
 Standard delete:
 
 ```cs