input & output only show up when declared in metadata array

[vanessayuenn]

Input & Output only show up on the info panel when they're declared in the directive metadata array like so:

@Component({
  inputs: ['hero'],
  outputs: ['deleteRequest'],
})

but not when they're specified using decorators:

@Input() hero: Hero;
@Output() deleteRequest = new EventEmitter<Hero>();

[ericjim]

I spoke to @sumitarora about this, it appears that we cannot proceed until reflection in angular2 exposes this @Input/@Output.

[sumitarora]

Fixed: #479 with support of Reflect.getOwnMetadata('propMetadata' type)