added some unit testing, need a lot more

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+[![Chai Documentation](http://chaijs.com/public/img/chai-logo.png)](http://chaijs.com)
+
+[![license:mit](https://img.shields.io/badge/license-mit-green.svg?style=flat-square)](#license)<br>
+[![tag:?](https://img.shields.io/github/tag/chaijs/chai.svg?style=flat-square)](https://github.com/chaijs/chai/releases)
+[![build:?](https://img.shields.io/travis/chaijs/chai/master.svg?style=flat-square)](https://travis-ci.org/chaijs/chai)
+[![coverage:?](https://img.shields.io/coveralls/chaijs/chai/master.svg?style=flat-square)](https://coveralls.io/r/chaijs/chai)<br>
+[![npm:](https://img.shields.io/npm/v/chai.svg?style=flat-square)](https://www.npmjs.com/packages/chai)
+[![dependencies:?](https://img.shields.io/npm/dm/chai.svg?style=flat-square)](https://www.npmjs.com/packages/chai)
+[![devDependencies:?](https://img.shields.io/david/chaijs/chai.svg?style=flat-square)](https://david-dm.org/chaijs/chai)
+
+[![Selenium Test Status](https://saucelabs.com/browser-matrix/chaijs.svg)](https://saucelabs.com/u/chaijs)
+
+[![Slack Status](https://chai-slack.herokuapp.com/badge.svg)]( https://chai-slack.herokuapp.com/)
+[![Join the chat at https://gitter.im/chaijs/chai](https://badges.gitter.im/Join%20Chat.svg)](https://gitter.im/chaijs/chai)
+
+Chai is a BDD / TDD assertion library for [node](http://nodejs.org) and the browser that
+can be delightfully paired with any javascript testing framework.
+
+For more information or to download plugins, view the [documentation](http://chaijs.com).
+
+### Plugins
+
+Chai offers a robust Plugin architecture for extending Chai's assertions and interfaces.
+
+- Need a plugin? View the [official plugin list](http://chaijs.com/plugins).
+- Have a plugin and want it listed? Open a Pull Request at [chaijs/chai-docs:plugin.js](https://github.com/chaijs/chai-docs/blob/master/plugins.js#L1-L12).
+- Want to build a plugin? Read the [plugin api documentation](http://chaijs.com/guide/plugins/).
+
+### Related Projects
+
+- [chaijs / assertion-error](https://github.com/chaijs/assertion-error): Custom `Error` constructor thrown upon an assertion failing.
+- [chaijs / deep-eql](https://github.com/chaijs/deep-eql): Improved deep equality testing for Node.js and the browser.
+- [chaijs / type-detect](https://github.com/chaijs/type-detect): Improved typeof detection for node.js and the browser.
+
+### Contributing
+
+Thank you very much for considering to contribute!
+
+Here are a few issues other contributors frequently ran into when opening pull requests:
+
+- Please do not commit changes to the `chai.js` build. We do it once per release.
+- Before pushing your commits, please make sure you [rebase](https://github.com/chaijs/chai/blob/master/CONTRIBUTING.md#pull-requests) them.
+
+We also strongly encourage you to read our detailed [contribution guidelines](https://github.com/chaijs/chai/blob/master/CONTRIBUTING.md).
+
+### Contributors
+
+Please see the full
+[Contributors Graph](https://github.com/chaijs/chai/graphs/contributors) for our
+list of contributors.
+
+### Core Contributors
+
+Feel free to reach out to any of the core contributors with your questions or
+concerns. We will do our best to respond in a timely manner.
+
+[![Jake Luer](https://avatars3.githubusercontent.com/u/58988?v=3&s=50)](https://github.com/logicalparadox)
+[![Veselin Todorov](https://avatars3.githubusercontent.com/u/330048?v=3&s=50)](https://github.com/vesln)
+[![Keith Cirkel](https://avatars3.githubusercontent.com/u/118266?v=3&s=50)](https://github.com/keithamus)
+
+## License
+
+(The MIT License)
+
+Copyright (c) 2011-2015 Jake Luer <jake@alogicalparadox.com>
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.