Added DVD and Box Office Information to OMDB API

[chattes]

The DVD and BoxOffice Information that was getting returned from the OMDB api was getting ignored in the output object. The Two have been added as you can see in the diff:

+       //Added DVD and Box Office Information to returned object
+       dvd: movie.DVD ? new Date(movie.DVD) : null,
+       boxOffice: movie.BoxOffice ? +movie.BoxOffice : null

Kindly review the same.