README.md in sinatra-errorcodes-0.1.1 vs README.md in sinatra-errorcodes-0.1.2

@@ -1,12 +1,20 @@
 # Sinatra::Errorcodes
 [![Gem Version](https://badge.fury.io/rb/sinatra-errorcodes.svg)](https://badge.fury.io/rb/sinatra-errorcodes)
 [![CircleCI](https://circleci.com/gh/IzumiSy/sinatra-errorcodes.svg?style=shield)](https://circleci.com/gh/IzumiSy/sinatra-errorcodes)
+[![standard-readme compliant](https://img.shields.io/badge/standard--readme-OK-green.svg?style=flat-square)](https://github.com/RichardLitt/standard-readme)
 > Gem of HTTP error status code class pack
 
-## Installation
+=======
+## Table of Contents
+- [Installation](#Installation)
+- [Example](#Example)
+- [Test](#Test)
+- [Contribute](#Contribute)
+- [License](#License)
 
+## Installation
 Add this line to your application's Gemfile:
 
 ```ruby
 gem 'sinatra-errorcodes'
 ```
@@ -15,24 +23,29 @@
 ```bash
 $ gem install sinatra-errorcodes
 ```
 
 ## Example
-
 Install gems
 ```bash
 $ bundle install
 ```
+
 and run it
 ```bash
-$ rackup -p 3000
+$ cd example
+$ bundle exec rackup -p 3000
 ```
 
-## Contributing
+## Test
+Default task in Rakefile is test
+```bash
+$ bundle exec rake
+```
 
+## Contribute
 Bug reports and pull requests are welcome on GitHub at https://github.com/IzumiSy/sinatra-errorcodes. This project is intended to be a safe, welcoming space for collaboration, and contributors are expected to adhere to the [Contributor Covenant](http://contributor-covenant.org) code of conduct.
 
 
 ## License
-
 The gem is available as open source under the terms of the [MIT License](http://opensource.org/licenses/MIT).