message: Update header comment
diff: -// Type definitions for pptxgenjs 2.3.0
  +// Type definitions for pptxgenjs 2.5.0
  // Project: https://gitbrent.github.io/PptxGenJS/
  // Definitions by: Brent Ely <https://github.com/gitbrent/>
  // Michael Beaumont <https://github.com/michaelbeaumont>
  // Nicholas Tietz-Sokolsky <https://github.com/ntietz>
  -// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
  -// TypeScript Version: 2.3
  +// David Adams <https://github.com/iota-pi>
  +// TypeScript Version: 3.x
  export as namespace PptxGenJS;
  @@ -63,7 +63,7 @@ declare namespace PptxGenJS {
  h?: Coord;
  }
  - export type CommonOptions = PositionOptions; // for backwards compatability
  + export type CommonOptions = PositionOptions; // for backwards compatibility
  export type Hyperlink = ({ url: string; slide?: undefined } | { slide: number; url?: undefined }) & { tooltip?: string };
  