README.md in recite_csv-0.1.1 vs README.md in recite_csv-0.1.2

@@ -2,10 +2,11 @@
 
 ReciteCSV helps to build a class for CSV reader.
 
 [![Gem Version](https://badge.fury.io/rb/recite_csv.svg)](https://badge.fury.io/rb/recite_csv)
 [![Build Status](https://travis-ci.org/yujideveloper/recite_csv.svg?branch=master)](https://travis-ci.org/yujideveloper/recite_csv)
+[![Maintainability](https://api.codeclimate.com/v1/badges/eb04cab6d55b0c7a1f7f/maintainability)](https://codeclimate.com/github/yujideveloper/recite_csv/maintainability)
 
 ## Installation
 
 Add this line to your application's Gemfile:
 
@@ -86,11 +87,11 @@
 ```
 
 Define custom methods of row object using `row_methods`.
 
 ``` ruby
-class Quz
+class Qux
   include ReciteCSV::Reader::Builder.new(col1: "COL1", col2: "COL2")
 
   row_methods do
     def col1
       "override #{super}"
@@ -100,16 +101,41 @@
       # do somethings..
     end
   end
 end
 
-Quz.new("./example.csv").each do |row|
-  row.class # => Quz::Row
+Qux.new("./example.csv").each do |row|
+  row.class # => Qux::Row
   row.col1
   row.col2
   row.custom_method
 end
 ```
+
+Specify file mode and encoding.
+
+``` ruby
+class Quux
+  include ReciteCSV::Reader::Builder.new(col1: "COL1", col2: "COL2")
+end
+
+Quux.new("./example.csv", file_options: "rb:UTF-8").each do |row|
+  # do something
+end
+```
+
+Convert encoding.
+
+``` ruby
+class Corge
+  include ReciteCSV::Reader::Builder.new(col1: "COL1", col2: "COL2")
+end
+
+Corge.new("./example.csv", file_options: ["rb:Shift_JIS:UTF-8", invalid: :replace, undef: :replace]).each do |row|
+  # do something
+end
+```
+
 
 ## Development
 
 After checking out the repo, run `bin/setup` to install dependencies. Then, run `rake spec` to run the tests. You can also run `bin/console` for an interactive prompt that will allow you to experiment.