message: linked to Coming Soon in readme
diff: @@ -7,7 +7,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
  ## [Unreleased]
  ### Coming In [3.0]:
  - Rewritten in Typescript
  -- `save()` will return a Promise
  +- See [Coming Soon in 3.0](https://github.com/GitBrent/PptxGenJS#coming-soon) for more details
  ## [2.6.0] - 2019-??-??
  