README.md in fluent-plugin-twitter-0.2.4 vs README.md in fluent-plugin-twitter-0.3.0

@@ -2,10 +2,22 @@
 =====================
 
 ## Component
 Fluentd Input/Output plugin to process tweets with Twitter Streaming API.
 
+## Dependency
+
+before use, install dependent library as:
+
+```bash
+# for RHEL/CentOS
+$ sudo yum install openssl-devel
+
+# for Ubuntu/Debian
+$ sudo apt-get install libssl-dev
+```
+
 ## Installation
 
 ### native gem
 
 `````
@@ -55,11 +67,11 @@
 
 <match notify.twitter>
   type twitter
   consumer_key        YOUR_CONSUMER_KEY
   consumer_secret     YOUR_CONSUMER_SECRET
-  oauth_token         YOUR_OAUTH_TOKEN
-  oauth_token_secret  YOUR_OAUTH_TOKEN_SECRET
+  access_token         YOUR_OAUTH_TOKEN
+  access_token_secret  YOUR_OAUTH_TOKEN_SECRET
 </match>
 `````
 
 ### Debug
 `````