- Documentation: added demo for bigSectionsDestination + clarified de…

…scription alvarotrigo#4002

README.md

@@ -434,7 +434,7 @@ the fitting by the configured milliseconds.
 
 - `normalScrollElements`: (default `null`) [Demo](https://codepen.io/alvarotrigo/pen/RmVazM) If you want to avoid the auto scroll when scrolling over some elements, this is the option you need to use. (useful for maps, scrolling divs etc.) It requires a string with the Javascript selectors for those elements. (For example: `normalScrollElements: '#element1, .element2'`). This option should not be applied to any section/slide element itself.
 
-- `bigSectionsDestination`: (default `null`) Defines how to scroll to a section which size is bigger than the viewport. By default fullPage.js scrolls to the top if you come from a section above the destination one and to the bottom if you come from a section below the destination one. Possible values are `top`, `bottom`, `null`.
+- `bigSectionsDestination`: (default `null`) [Demo](https://codepen.io/alvarotrigo/pen/vYLdMrx) Defines how to scroll to a section which height is bigger than the viewport and when not using `scrollOverflow:true`. (Read [how to create smaller or bigger sections](https://github.com/alvarotrigo/fullPage.js#creating-smaller-or-bigger-sections)). By default fullPage.js scrolls to the top if you come from a section above the destination one and to the bottom if you come from a section below the destination one. Possible values are `top`, `bottom`, `null`.
 
 - `keyboardScrolling`: (default `true`) Defines if the content can be navigated using the keyboard.