docs: add NateRadebaugh as a contributor

.all-contributorsrc

@@ -0,0 +1,24 @@
+{
+  "files": [
+    "README.md"
+  ],
+  "imageSize": 100,
+  "commit": false,
+  "contributors": [
+    {
+      "login": "NateRadebaugh",
+      "name": "Nate Radebaugh",
+      "avatar_url": "https://avatars1.githubusercontent.com/u/130445?v=4",
+      "profile": "http://naterad.com",
+      "contributions": [
+        "code"
+      ]
+    }
+  ],
+  "contributorsPerLine": 7,
+  "projectName": "react-datetime",
+  "projectOwner": "NateRadebaugh",
+  "repoType": "github",
+  "repoHost": "https://github.com",
+  "skipCi": true
+}

README.md

@@ -1,4 +1,7 @@
 # react-datetime
+<!-- ALL-CONTRIBUTORS-BADGE:START - Do not remove or modify this section -->
+[![All Contributors](https://img.shields.io/badge/all_contributors-1-orange.svg?style=flat-square)](#contributors-)
+<!-- ALL-CONTRIBUTORS-BADGE:END -->
 
 [![CircleCI](https://circleci.com/gh/NateRadebaugh/react-datetime.svg?style=svg)](https://circleci.com/gh/NateRadebaugh/react-datetime)
 [![Build Status](https://secure.travis-ci.org/NateRadebaugh/react-datetime.svg)](https://travis-ci.org/NateRadebaugh/react-datetime)
@@ -134,3 +137,22 @@ For information about how to contribute, see the [CONTRIBUTING](.github/CONTRIBU
 ### [Changelog](CHANGELOG.md)
 
 ### [MIT Licensed](LICENSE.md)
+
+## Contributors ✨
+
+Thanks goes to these wonderful people ([emoji key](https://allcontributors.org/docs/en/emoji-key)):
+
+<!-- ALL-CONTRIBUTORS-LIST:START - Do not remove or modify this section -->
+<!-- prettier-ignore-start -->
+<!-- markdownlint-disable -->
+<table>
+  <tr>
+    <td align="center"><a href="http://naterad.com"><img src="https://avatars1.githubusercontent.com/u/130445?v=4" width="100px;" alt=""/><br /><sub><b>Nate Radebaugh</b></sub></a><br /><a href="https://github.com/NateRadebaugh/react-datetime/commits?author=NateRadebaugh" title="Code">💻</a></td>
+  </tr>
+</table>
+
+<!-- markdownlint-enable -->
+<!-- prettier-ignore-end -->
+<!-- ALL-CONTRIBUTORS-LIST:END -->
+
+This project follows the [all-contributors](https://github.com/all-contributors/all-contributors) specification. Contributions of any kind welcome!