message: docs(pipeable): Add additional simplified operator
  Add a simpler form of the same operator as an example.
diff: @@ -95,13 +95,23 @@ const takeEveryNth = (n: number) => <T>(source: Observable<T>) =>
  })
  });
  +/**
  + * You can also use an existing operator like so
  + */
  const takeEveryNthSimple = (n: number) => <T>(source: Observable<T>) =>
  source.pipe(filter((value, index) => index % n === 0 ))
  +/**
  + * And since pipeable operators return functions, you can further simplify like so
  + */
  +const takeEveryNthSimplest = (n: number) => filter((value, index) => index % n === 0);
  +
  interval(1000).pipe(
  takeEveryNth(2),
  map(x => x + x),
  takeEveryNthSimple(3),
  + map(x => x * x),
  + takeEveryNthSimplest(4),
  take(3),
  toArray()
  )
  