Please provide default binary

[AlexeyKupershtokh]

I think this can be done this way: https://npmjs.org/doc/json.html#bin

Rationale is simple: I would like to just npm install [-g] policyfile and be able to use it without creating any new files.

[3rd-Eden]

I'll be more then happy to accept a pull request for it. But it's nothing something I would use my self.