message: Added rtlMode to textBox
diff: @@ -438,6 +438,7 @@ slide.addText([ {text:'TEXT', options:{OPTIONS}} ]);
  | `italic` | boolean | | `false` | italic text | `true` or `false` |
  | `margin` | number | points | | margin | 0-99 (ProTip: use the same value from CSS `padding`) |
  | `rectRadius` | number | inches | | rounding radius | rounding radius for `ROUNDED_RECTANGLE` text shapes |
  +| `rtlMode` | boolean | | `false` | enable Right-to-Left mode | `true` or `false` |
  | `shadow` | object | | | text shadow options | see options below. Ex: `shadow:{ type:'outer' }` |
  | `underline` | boolean | | `false` | underline text | `true` or `false` |
  | `valign` | string | | | vertical alignment | `top` or `middle` or `bottom` |
  