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CONTRIBUTING.md

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+# Contributing to Nativefier
+
+## Issues
+
+Please include the following in your new issue:
+
+- Version of Nativefier (run `$ nativefier --version`)
+- Version of Node.js (run `$ node --version`)
+- Command line parameters
+- OS and architecture you are running Nativefier from
+- Stack trace from the error message (if any)
+- Instructions to reproduce the issue
+
+## Pull Requests
+
+See [here](https://github.com/jiahaog/nativefier#development) for instructions on how to set up a development environment.
+
+Follow the current code style, and make sure tests and lints pass before submitting with the following commands:
+
+Run the following command before submitting the pull request:
+
+```bash
+# Run tests and linting
+$ npm run ci
+```
+
+Or you can run them separately:
+
+```bash
+# Tests
+$ npm run test
+
+# Lint source files
+$ npm run lint
+```
+
+Thank you so much for your contribution!