message: Issue - added new master object type
diff: @@ -927,7 +927,7 @@ pptx.save();
  | `slideNumber` | object | | | Show slide numbers | ex: `{ x:1.0, y:'50%' }` `x` and `y` can be either inches or percent |
  | `margin` | number | inches | `1.0` | Slide margins | 0.0 through Slide.width |
  | `margin` | array | | | Slide margins | array of numbers in TRBL order. Ex: `[0.5, 0.75, 0.5, 0.75]` |
  -| `objects` | array | | | Objects for Slide | object with type and options. Type:`image`,`line`,`rect` or `text`. [Example](https://github.com/gitbrent/PptxGenJS#slide-master-examples) |
  +| `objects` | array | | | Objects for Slide | object with type and options. Type:`chart`,`image`,`line`,`rect` or `text`. [Example](https://github.com/gitbrent/PptxGenJS#slide-master-examples) |
  | `title` | string | | | Slide title | some title |
  ## Sample Slide Master File
  