Support custom registry and timeout

[xpure-sklatt]

This provides 2 new options:

• --registry to set a custom registry url (including https and credentials)
• --check-version-timeout to set custom timeout value when checking for new version

Makes it possible to use custom npm registries that require https and user/password authenfication as well as a custom timeout value for fetching the new version numbers.

[coveralls]

Coverage remained the same at 78.137% when pulling 0b56fd4 on xpure-sklatt:master into 9205cc6 on bahmutov:master.

[bahmutov]

please remove this - this module is using semantic-release to set the next version automatically

[bahmutov]

Great feature @xpure-sklatt but can you just remove the version from the package.json and I will merge it

[coveralls]

Coverage remained the same at 78.137% when pulling ea268cc on xpure-sklatt:master into 9205cc6 on bahmutov:master.

[xpure-sklatt]

Cool, thanks @bahmutov! I've just reset the version to 0.0.0

[bahmutov]

Great, merged it in, hope to publish soon @xpure-sklatt

[xpure-sklatt]

Awesome, I'm looking forward to use it