feat(pipe): added the Pipe decorator and the pipe property to View

BREAKING CHANGE:
    Instead of configuring pipes via a Pipes object, now you can configure them by providing the pipes property to the View decorator.

    @Pipe({
      name: 'double'
    })
    class DoublePipe {
      transform(value, args) { return value * 2; }
    }

    @View({
      template: '{{ 10 | double}}'
      pipes: [DoublePipe]
    })
    class CustomComponent {}

Closes #3572

modules/angular2/change_detection.ts

@@ -20,14 +20,12 @@ export {
   ChangeDetectorRef,
 
   WrappedValue,
-  defaultPipes,
-  Pipe,
-  Pipes,
+  PipeTransform,
   IterableDiffers,
   IterableDiffer,
   IterableDifferFactory,
   KeyValueDiffers,
   KeyValueDiffer,
   KeyValueDifferFactory,
-  BasePipe
+  BasePipeTransform
 } from 'angular2/src/change_detection/change_detection';