Merge pull request #150 from seriyps/async-window

Add `async_threshold_window` option. #147
diff --git a/README.md b/README.md
index 0eb1711..116be24 100644
--- a/README.md
+++ b/README.md
@@ -81,7 +81,6 @@
     {lager_console_backend, info},
     {lager_file_backend, [{file, "error.log"}, {level, error}]},
     {lager_file_backend, [{file, "console.log"}, {level, info}]}
-    ]}
   ]}
 ]}.
 ```
@@ -102,7 +101,6 @@
     {lager_file_backend, [{name, "error.log"}, {level, error}, {formatter, lager_default_formatter},
       {formatter_config, [date, " ", time," [",severity,"] ",pid, " ", message, "\n"]}]},
     {lager_file_backend, [{name, "console.log"}, {level, info}]}
-    ]}
   ]}
 ]}.
 ```