message: Updated Saving portion
diff: @@ -44,6 +44,7 @@ Quickly and easily create PowerPoint presentations with a few simple JavaScript
  - [Saving a Presentation](#saving-a-presentation)
  - [Client Browser](#client-browser)
  - [Node.js](#nodejs-1)
  + - [Saving Multiple Presentations](#saving-multiple-presentations)
  - [Presentations: Adding Objects](#presentations-adding-objects)
  - [Adding Charts](#adding-charts)
  - [Chart Types](#chart-types)
  @@ -280,20 +281,26 @@ pptx.save('Demo-Media');
  * Output type can be specified by passing an optional [JSZip output type](https://stuk.github.io/jszip/documentation/api_jszip/generate_async.html)
  ```javascript
  -// A: File will be saved to the local working directory (`__dirname`)
  +// Example A: File will be saved to the local working directory (`__dirname`)
  pptx.save('Node_Demo');
  -// B: Inline callback function
  +
  +// Example B: Inline callback function
  pptx.save('Node_Demo', function(filename){ console.log('Created: '+filename); });
  -// C: Predefined callback function
  +
  +// Example C: Predefined callback function
  pptx.save('Node_Demo', saveCallback);
  -// D: Use a filename of "http" or "https" to receive the powerpoint binary data in your callback
  -// Used for streaming the presentation file via http. See the `nodejs-demo.js` file for a working example.
  +
  +// Example D: Use a filename of "http" or "https" to receive the powerpoint binary data in your callback
  +// (Used for streaming the presentation file via http. See the `nodejs-demo.js` file for a working example.)
  pptx.save('http', streamCallback);
  -// E: Save using various JSZip output types: ['arraybuffer', 'base64', 'binarystring', 'blob', 'nodebuffer', 'uint8array']
  +
  +// Example E: Save using various JSZip output types: ['arraybuffer', 'base64', 'binarystring', 'blob', 'nodebuffer', 'uint8array']
  pptx.save('jszip', saveCallback, 'base64');
  ```
  -Saving multiple Presentations:
  +### Saving Multiple Presentations
  +
  +Client-Side:
  * In order to generate a new, unique Presentation just create a new instance of the library then add objects and save as normal.
  ```javascript
  @@ -307,6 +314,8 @@ pptx.addNewSlide().addText('Presentation 2', {x:1, y:1});
  pptx.save('PptxGenJS-Presentation-2');
  ```
  +Node.js:
  +* Multiple presentations are a bit more complicated in Node - see [Issue #83](https://github.com/gitbrent/PptxGenJS/issues/83)
  