Provide an easy way to configure new pipes

[vsavkin]

Currently pipes are global and are not easily configurable. We need to make them scoped to a component and provide a way to easily configure them.

Proposal:

@Component({
  viewInjector: [
         bind(Pipes).toFactory(Pipes.append({
                async: [newAsyncPipe]
         })
  ]
})

[jeffbcross]

@btford and @matsko heads up that we're renaming PipeRegistry to Pipes. What do you think of changing RouteRegistry to Routes?

[matsko]

Works for me.