message: added small note
diff: @@ -322,6 +322,7 @@ pptx.save('PptxGenJS-Presentation-2');
  Node.js:
  * See `examples/nodejs-demo.js` for a working demo with multiple presentations, callbacks, streaming, etc.
  +* (Note: New 2.0.0 feature that breaks backwards compatibility)
  ```javascript
  PptxGenJS = require("pptxgenjs");
  