add license headers to all the source files in hardware

[narendasan]

pre-append the following header to the file as a comment to all source files:

Copyright © 2017, ACM@UIUC

This file is part of the Merch Project.  
 
The Merch Project is open source software, released under the University of Illinois/NCSA Open Source License. 
You should have received a copy of this license in a file with the distribution.

[rauhul]

How would we implement this

[narendasan]

let me look into open hardware practices

[narendasan]

ok so we have a couple options
we can use the NCSA license though its a software license which seems fine (Arduino uses GPL)
or we can use CC-by-SA which people use on hardware projects
as to how to add it, a file called LICENSE should be sufficient