README.md in fluent-plugin-sakuraio-0.1.3 vs README.md in fluent-plugin-sakuraio-0.2.0

@@ -19,10 +19,11 @@
 
 ```
 <source>
   @type sakuraio
   url wss://api.sakura.io/ws/v1/xxxxxxxxxxxxxxxxxxxxxxx
+  ping 60
 </source>
 ```
 
 ### Tag format
 
@@ -43,9 +44,10 @@
 <match **>
   @type sakuraio
   url wss://api.sakura.io/ws/v1/xxxxxxxxxxxxxxxxxxxxxxx
   modules ["uXXXXXXXXXXX"] # array of modules
   channels {"0": ["key", "i"]} # hash of channels {"channel number": ["key in record", "data type"]}
+  ping 60
 </match>
 ```
 
 ## License