add README

* add simple README for the project

* add links for badges

* add comment explaining cloning single directory

Author: cosmycoder

README.md

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+<div id="top"></div>
+
+[![Contributors][contributors-shield]][contributors-url]
+[![Forks][forks-shield]][forks-url]
+[![Stargazers][stars-shield]][stars-url]
+[![Issues][issues-shield]][issues-url]
+
+
+
+<!-- PROJECT LOGO -->
+<br />
+<div align="center">
+<h3 align="center">Smart Contract Examples and Samples</h3>
+
+  <p align="center">
+    <a href="https://github.com/smartcontractkit/smart-contract-examples/issues">Report Bug</a>
+    ·
+    <a href="https://github.com/smartcontractkit/smart-contract-examples/issues">Request Feature</a>
+  </p>
+</div>
+
+
+
+<!-- TABLE OF CONTENTS -->
+<details>
+  <summary>Table of Contents</summary>
+  <ol>
+    <li>
+      <a href="#about-the-project">About The Project</a>
+    </li>
+    <li>
+      <a href="#getting-started">Getting Started</a>
+    </li>
+    <li>
+    <a href="#downloading-a-single-directory">Downloading A Single Directory</a>
+    </li>
+    <li>
+      <a href="#contributing">Contributing</a>
+    </li>
+  </ol>
+</details>
+
+
+
+<!-- ABOUT THE PROJECT -->
+## About The Project
+
+This repo contains example and sample projects, each in their own directory. 
+
+<p align="right">(<a href="#top">back to top</a>)</p>
+
+
+
+<!-- GETTING STARTED -->
+## Getting Started
+
+Each directory within this repo will have a `README.md` that details everything you need to run the sample.
+
+## Downloading A Single Directory
+```sh
+# Create a directory, and enter it
+mkdir smart-contract-examples && cd smart-contract-examples
+
+# Initialize a Git repository
+git init
+
+# Add this repository as a remote origin
+git remote add -f origin https://github.com/smartcontractkit/smart-contract-examples/
+
+# Enable the tree check feature
+git config core.sparseCheckout true
+
+# Create the spare-checkout file with the value
+# the directory you wish to download
+#
+# Use the name of the directory as 'REPLACE_ME'
+echo 'REPLACE_ME' >> .git/info/sparse-checkout
+
+## Download with pull
+git pull origin master
+```
+
+<!-- CONTRIBUTING -->
+## Contributing
+
+Contributions are what make the open source community such an amazing place to learn, inspire, and create. Any contributions you make are **greatly appreciated**.
+
+If you have a suggestion that would make this better, please fork the repo and create a pull request. You can also simply open an issue with the tag "enhancement".
+Don't forget to give the project a star! Thanks again!
+
+1. Fork the Project
+2. Create your Feature Branch (`git checkout -b feature/AmazingFeature`)
+3. Commit your Changes (`git commit -m 'Add some AmazingFeature'`)
+4. Push to the Branch (`git push origin feature/AmazingFeature`)
+5. Open a Pull Request
+
+<p align="right">(<a href="#top">back to top</a>)</p>
+
+<!-- MARKDOWN LINKS & IMAGES -->
+<!-- https://www.markdownguide.org/basic-syntax/#reference-style-links -->
+[contributors-shield]: https://img.shields.io/github/contributors/smartcontractkit/smart-contract-examples.svg?style=for-the-badge
+[contributors-url]: https://github.com/smartcontractkit/smart-contract-examples/graphs/contributors
+[forks-shield]: https://img.shields.io/github/forks/smartcontractkit/smart-contract-examples.svg?style=for-the-badge
+[forks-url]: https://github.com/smartcontractkit/smart-contract-examples/network/members
+[stars-shield]: https://img.shields.io/github/stars/smartcontractkit/smart-contract-examples.svg?style=for-the-badge
+[stars-url]: https://github.com/smartcontractkit/smart-contract-examples/stargazers
+[issues-shield]: https://img.shields.io/github/issues/smartcontractkit/smart-contract-examples.svg?style=for-the-badge
+[issues-url]: https://github.com/smartcontractkit/smart-contract-examples/issues