[License-review] Setup Tooling License 1.3

[Josh Berkus]

Eddi-Jay:

> As it is derived from the MIT license it is very similar to that,
> the difference made is a restriction to use or better said no use in 
> closed-source software.

What you want to do is the normal domain of what's called "Copyleft 
licenses" such as the GPL.  Why not just use one of these licenses? 
There's a real advantage in using a popular, well-known license if you 
want folks to adopt your software.

-- 
Josh Berkus