README.md in embulk-input-mysql-0.5.0 vs README.md in embulk-input-mysql-0.6.0

@@ -36,10 +36,10 @@
   - **value_type**: embulk get values from database as this value_type. Typically, the value_type determines `getXXX` method of `java.sql.PreparedStatement`.
   (string, default: depends on the sql type of the column. Available values options are: `long`, `double`, `float`, `decimal`, `boolean`, `string`, `date`, `time`, `timestamp`)
   - **type**: Column values are converted to this embulk type.
   Available values options are: `boolean`, `long`, `double`, `string`, `timestamp`).
   By default, the embulk type is determined according to the sql type of the column (or value_type if specified).
-  - **timestamp_format**: If the sql type of the column is `date`/`time`/`datetime` and the embulk type is `string`, column values are formatted by this timestamp_format. And if the embulk type is `timestamp`, this timestamp_format will be used in the output plugin. (string, default : `%Y-%m-%d` for `date`, `%H:%M:%S` for `time`, `%Y-%m-%d %H:%M:%S` for `timestamp`)
+  - **timestamp_format**: If the sql type of the column is `date`/`time`/`datetime` and the embulk type is `string`, column values are formatted by this timestamp_format. And if the embulk type is `timestamp`, this timestamp_format may be used in the output plugin. For example, stdout plugin use the timestamp_format, but *csv formatter plugin doesn't use*. (string, default : `%Y-%m-%d` for `date`, `%H:%M:%S` for `time`, `%Y-%m-%d %H:%M:%S` for `timestamp`)
   - **timezone**: If the sql type of the column is `date`/`time`/`datetime` and the embulk type is `string`, column values are formatted in this timezone.
 (string, value of default_timezone option is used by default)
 
 ## Example