Applying new settings - default zoom, hide grid lines, landscape orientation

[saravmajestic]

Thanks for this library. Works nicely

I am sharing my learnings here on how to apply different settings using this library.

1. Changing from default 'portrait' view to 'landscape'
   In Sheet.prototype.toxml, change the orientation to landscape like this ws.ele('pageSetup', { paperSize: '9', orientation: 'landscape', horizontalDpi: '200', verticalDpi: '200' });

2. For fitting all the content in single page while printing (In excel, you can do this using 'Page setup' option)
   Use the below code in Sheet.prototype.toxml as first element in the xml (just above dimension attribute)
   ws.ele('sheetPr', {}).ele('pageSetUpPr', { fitToPage:1 });

3. Hide grid lines and set default zoom level
   ws.ele('sheetViews').ele('sheetView', { workbookViewId: '0', showGridLines:"0", zoomScaleNormal: 50, zoomScale:50 });

Hope this will be useful for somebody.