API usage improvements

[daffl]

The current API still feels a little verbose. I'd really like to offer something that is chainable, offering all the current functionality but a little more concise:

const sayHi = hooks(name => `Hi ${name}`, [ hook1 ]).params('name').defaults({
  name: 'Dave'
});

This would still work on objects:

const o = {
  sayHi(name) { return `Hi ${name}` }
}

hooks(o, {
  sayHi: hooks([ hook1 ]).params('name').defaults({
    name: 'Dave'
  })
});

[bertho-zero]

#23