One of the requirements for the 2017 competition entry is to detail licence requirements. I don't know much about the different types. When I set up the github account for this project, I was asked to choose a licence. I went with the MIT licence as it gives free use of the code so long as I am quoted as the original creator. Why would this appeal? Do I crave the fame of having this project associated with me? Of course! In reality, knowing who created the code will allow anybody who uses it to easily find my webpage, where I intend to keep the designs and code up to date with the inevitable fixes and improvements. This should help whoever uses handShake to have easy access to the latest and most reliable design and code. 

Here we go:

Copyright (c) 2017 Matthew Oppenheim

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.