Add version option

[caspervonb]

No description provided.

[zertosh]

Nah, npm ls watchify already gives you the version.

browserify's CLI already uses v and version. So we'd be breaking parity, and we can't use v because that's already for verbose.

Frankly the value of this option is not worth the trouble.

[zertosh]

Once browserify/browserify#1222 goes through, we can do this PR without the "V". Also to make it a bit more useful, how about something like?

if (w.argv.version) {
    console.log(
        'watchify v%s (in %s)',
        require('../package.json').version,
        path.dirname(require.resolve('../package.json'))
    )
    console.log(
        'browserify v%s (in %s)',
        require('browserify/package.json').version,
        path.dirname(require.resolve('browserify/package.json'))
    )
    process.exit(0);
}

[caspervonb]

Nah, npm ls watchify already gives you the version.

Granted npm ls watchify does give you the version but that is not necessarily the same as what is in being invoked in the shell through watchify, and when asking for the watchify version someone is running they're not likely to check npm.

Once browserify/browserify#1222 goes through, we can do this PR without the "V". Also to make it a bit more useful ...

👍

[zertosh]

I made the changes on your commit f667e99

[zertosh]

Thanks! sorry for the long wait on this