License

[NoahGorny]

Hey @liborw
We use your bash completion script in our project and really enjoy it 😄

However, it seems like currently your project has no license, which will cause us to remove your script from our repo (we want to add a license and as such cannot include unlicensed work, see Bash-it/bash-it#512)

Could you please add a license? This will greatly help us 😃