README.md in fluent-plugin-gcloud-pubsub-custom-0.3.0 vs README.md in fluent-plugin-gcloud-pubsub-custom-0.3.1

@@ -86,10 +86,11 @@
   topic <YOUR TOPIC>
   subscription <YOUR SUBSCRIPTION>
   max_messages 1000
   return_immediately true
   pull_interval 0.5
+  pull_threads 2
   format json
   enable_rpc true
   rpc_bind 0.0.0.0
   rpc_port 24680
 </source>
@@ -114,9 +115,11 @@
 - `return_immediately` (optional, default: `true`)
   - See returnImmediately on https://cloud.google.com/pubsub/subscriber#receiving-pull-messages
   - If `return_immediately` is `true` and pulling message is stopped by HTTP RPC, this plugin wait `pull_interval` each pull.
 - `pull_interval` (optional, default: `5.0`)
   - Pulling messages by intervals of specified seconds.
+- `pull_threads` (optional, default: `1`)
+  - Set number of threads to pull messages.
 - `format` (optional, default: `json`)
   - Set input format. See format section in http://docs.fluentd.org/articles/in_tail
 - `enable_rpc` (optional, default: `false`)
   - If `true` is specified, HTTP RPC to stop or start pulling message is enabled.
 - `rpc_bind` (optional, default: `0.0.0.0`)