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+# Contributing Guide
+
+[![Gem Version](https://badge.fury.io/rb/extract_i18n.svg)](https://badge.fury.io/rb/extract_i18n)
+
+## Workflow
+- fork the repository and setup the environment
+- create a new branch: `feature/xxx`, `fix/xxx`
+- commit codes and tests to finish the feature or bug fix
+- push to remote and create a pull request
+
+## Environment setup
+- use ruby version: 2.6
+- install dependencies: `bundle install`
+- make sure the test passed: `bundle exec rspec`