Changed to "opn" package.

[rodrigopandini]

• open package is DEPRECATED:
  • there is a vulnerability found: https://www.npmjs.com/advisories/663

[rodrigopandini]

Resolve #28

Hi @baldore
Can you please review and merge this?

[jnv22]

Would appreciate this too @baldore

[gilamran]

@rodrigopandini I see that this PR is stuck for some reason... do you have another solution?

[rodrigopandini]

@gilamran Seens that this repo is abandoned.
You can use my fork for now:
https://github.com/rodrigopandini/open-browser-webpack-plugin

[gilamran]

@rodrigopandini Yea I saw your fork, thanks.
But how do I tell npm to take yours?

[rodrigopandini]

@gilamran
npm install rodrigopandini/open-browser-webpack-plugin don't work for you?

[gilamran]

@rodrigopandini works, that's just what I was looking for ;-)