license missing

[robertkowalski]

Sorry that I am nitpicking here, but for some usages of couchapp.js a license is really important.

Can we add one? I can prepare a PR if you name me the desired one.

[bengl]

👍 this is realllly needed.

[drewfish]

License means we can use it. No license means we can't use it 😢

[bengl]

This was resolved in #106 and can now be closed (perhaps pending version bump).