README.md in yasuri-2.0.13 vs README.md in yasuri-3.0.0

@@ -1,6 +1,7 @@
-# Yasuri [![Build Status](https://travis-ci.org/tac0x2a/yasuri.svg?branch=master)](https://travis-ci.org/tac0x2a/yasuri) [![Coverage Status](https://coveralls.io/repos/tac0x2a/yasuri/badge.svg?branch=master)](https://coveralls.io/r/tac0x2a/yasuri?branch=master) [![Code Climate](https://codeclimate.com/github/tac0x2a/yasuri/badges/gpa.svg)](https://codeclimate.com/github/tac0x2a/yasuri)
+# Yasuri
+[![Build Status](https://travis-ci.org/tac0x2a/yasuri.svg?branch=master)](https://travis-ci.org/tac0x2a/yasuri) [![Coverage Status](https://coveralls.io/repos/tac0x2a/yasuri/badge.svg?branch=master)](https://coveralls.io/r/tac0x2a/yasuri?branch=master) [![Maintainability](https://api.codeclimate.com/v1/badges/c29480fea1305afe999f/maintainability)](https://codeclimate.com/github/tac0x2a/yasuri/maintainability)
 
 Yasuri (鑢) is an easy web-scraping library for supporting "[Mechanize](https://github.com/sparklemotion/mechanize)".
 
 Yasuri can reduce frequently processes in Scraping.
 
@@ -57,16 +58,12 @@
 src = <<-EOYAML
 root:
   node: links
   path: "//*[@id='menu']/ul/li/a"
   children:
-    - title:
-        node: text
-        path: "//*[@id='contents']/h2"
-    - content:
-        node: text
-        path: "//*[@id='contents']/p[1]"
+    - title:   { node: text, path: "//*[@id='contents']/h2" }
+    - content: { node: text, path: "//*[@id='contents']/p[1]" }
 EOYAML
 root = Yasuri.yaml2tree(src)
 
 
 # Node tree constructing by JSON
@@ -93,9 +90,20 @@
 
 result = root.inject(agent, root_page)
 # => [ {"title" => "PageTitle", "content" => "Page Contents" }, ...  ]
 ```
 
+## Dev
+```sh
+$ gem install bundler
+$ bundle install
+```
+### Test
+```sh
+$ rake
+# or
+$ rspec spec/*spec.rb
+```
 
 ## Contributing
 
 1. Fork it ( https://github.com/tac0x2a/yasuri/fork )
 2. Create your feature branch (`git checkout -b my-new-feature`)