README.md in fluent-plugin-twilio-0.1.0 vs README.md in fluent-plugin-twilio-0.1.1

@@ -29,12 +29,12 @@
 ## Configuration
 
 ### Message Format
 `````
 fluent_logger.post('notify.call', {
-  :message  => 'Hello World!',   # Required
-  :number   => '[phone]'  # Required
+  :number   => '[phone]',  # Required if default_number is brank
+  :message  => 'Hello World!'   # Required if default_message is brank
 })
 `````
 
 ### Sample
 `````
@@ -54,9 +54,10 @@
   from_number     [phone]                 # Required
 
   # Set defaults of making outbound call.
   # To call multiple phone at the same time, list them with comma like below.
   default_number  [phone],[phone]  # Optional
+  default_message "call from fluentd."         # Optional
 
   # Set log level to prevent info error
   @log_level       warn
 </match>
 `````