Relicense as MIT

[vain]

Hi @tiwo,

in early 2011, you contributed code to this project.

I just wanted to let you know that this project is soon going to be re-released under a slightly different license: I'll switch from PIZZA-WARE to the MIT license.

It has been brought to my attention a while ago (vain/sgopherd#2), that PIZZA-WARE is not optimal for the free software community. It is arcane and hardly used by anyone. This makes it more difficult for distributions to include this project.

Hence the switch to the MIT license. It's the same spirit as PIZZA-WARE, but the MIT license is widely used and well known.

If you do have any objections against this, please let me know.

Thank you!