Publish to npm

[maximilianschmid]

Hello, the latest version in github works great. Use the --install-command feature a lot.
Please publish to npm so I don't have to install via github url.

Great work, thx.

[thdk]

@maximilianschmid you may want to use https://github.com/thdk/package-changed while waiting for the next release of install-changed.

Disclaimer, it contains mainly code which I borrowed from install-changed.

[vikshv]

Please publish to npm