Add to licenses

[MichaelCurrin]

trafficstars

Add a copy-and-paste description to go in the License section of a README, showing in bullet point form what people can do and must obey

[MichaelCurrin]

e.g.

## License

Licensed under [MIT license](https://github.com/MichaelCurrin/docsify-js-tutorial/blob/master/LICENSE)

- You can modify and reuse this project. 
- A copy of the license and copyright notice must be included with the software. [source](https://choosealicense.com/licenses/#mit).
- Please link back to this repo somewhere in your project.