README.md in fluent-plugin-split-0.0.2 vs README.md in fluent-plugin-split-0.0.3

@@ -1,5 +1,7 @@
+[![Build Status](https://secure.travis-ci.org/toyama0919/fluent-plugin-split.png?branch=master)](http://travis-ci.org/toyama0919/fluent-plugin-split)
+
 # fluent-plugin-split
 
 Output Split String Plugin for fluentd
 
 ## Installation
@@ -19,14 +21,14 @@
 
 ## parameter
 
 param    |   value
 --------|------
-output_tag|output tag
-output_key|output split word key
-format|csv or tsv or space
-key_name|target key name
-keep_keys|keep keys(comma separator)
+output_tag|output tag(require)
+output_key|output split word key(require)
+format|csv or tsv or space(default csv)
+key_name|target key name(require)
+keep_keys|keep keys comma separator(optional)
 
 ## Configuration
 
 Example: