docs: update docs

Author: arrudadev

.github/CONTRIBUTING.md

@@ -0,0 +1,12 @@
+# Contributing
+
+**Working on your first Pull Request?** You can learn how from this *free* series [How to Contribute to an Open Source Project on GitHub](https://egghead.io/series/how-to-contribute-to-an-open-source-project-on-github)
+
+## How to Contribute
+
+1. Fork this repository;
+2. Create your feature branch: `git checkout -b feature/feature-name`;
+3. Commit your changes: `git commit -m 'feat: add some feature'`;
+4. Push to the branch: `git push origin feature/feature-name`.
+
+**After your pull request is merged**, you can safely delete your branch.

.github/PULL_REQUEST_TEMPLATE

@@ -0,0 +1,12 @@
+  
+<!-- If this is your first time, please read our contribution guidelines: (https://github.com/monteiro-alexandre/react-theme-switcher/.github/CONTRIBUTING.md) -->
+
+<!-- If possible complete *all* sections as described. Don't remove any section. -->
+
+**Changes proposed**
+<!--- Describe the change below, including rationale and design decisions -->
+
+<!--- Include "Fixes #[issue_number]" if you are fixing an existing issue -->
+
+**Additional context**
+<!-- Add any other context or screenshots about the feature request here. -->

README.md

@@ -4,6 +4,10 @@
   </a>
 </h1>
 
+![build](https://github.com/monteiro-alexandre/react-theme-switcher/workflows/build/badge.svg?branch=master)
+[![License: MIT](https://img.shields.io/badge/License-MIT-brightgreen.svg)](https://opensource.org/licenses/MIT)
+[![PRs Welcome](https://img.shields.io/badge/PRs-welcome-brightgreen.svg?style=flat-square)](http://makeapullrequest.com)
+
 Lading page with Dark/Light theme switcher.
 
 ## 💻 Technologies
@@ -41,6 +45,10 @@ yarn start
 
 To view the project you can open [localhost:3000](http://localhost:3000).
 
+## 🤔 Contributing
+
+Please read [CONTRIBUTING.md](.github/CONTRIBUTING.md) for details on the code of conduct and the process for submitting pull requests.
+
 ## License
 
 This project is licensed under the MIT License - see the [LICENSE](LICENSE.md) file for details.