Support root-level attributes, close #32

[nickmessing]

Allow people to use syntax like:

export default {
  render() {
    return <MyComponent props={{ prop: 'value' }} />
  }
}

[znck]

I'm assuming propsProp1="foo" is same as props={ prop1: 'foo' }.

[znck]

Does the generated code depend on prop order?

<MyComponent props={{ prop1: 'alpha', prop2: 'beta' }} propsProp1="foo" />

[nickmessing]

@znck, yes, it will be merged in the end to something that behaves like:

{
  ...{ prop1: 'alpha', prop2: 'beta' }
  ...{ prop1: 'foo' }
}

Just like it normally would work if you declare a JS object with same key twice...

[znck]

Could you please explain the requirement in detail?