`user` ns suggestion

[vemv]

I was hammocking how to "install" this in such a way that will be smoothly integrated with tools.namespace.

i.e. any code loading of test namespaces should be performed after the install! call, so that the macroexpansions happen as expected.

For that, install! should be likely performed in the user ns, which as you know has a special semantic for the compiler.

Feel free to mention this in the readme, or something to that effect!

Cheers - V