message: Remove some methods from example usage demonstration in README
diff: @@ -171,24 +171,13 @@ Classname that will be applied to the wrapper when a pointer is dragging the car
  ## API
  -Embla exposes a set of methods upon setup that can be used to control the carousel externally. Usage looks like this:
  +Embla exposes a set of methods upon setup that can be used to control the carousel externally. Example usage looks like this:
  ```javascript
  -embla.containerNode()
  -embla.slideNodes()
  embla.next()
  -embla.previous()
  embla.goTo(2)
  -embla.selectedIndex()
  -embla.previousIndex()
  -embla.groupedIndexes()
  -embla.isFirstIndex()
  -embla.islastIndex()
  -embla.hasPreviousIndex()
  -embla.hasNextIndex()
  embla.changeOptions({ loop: true })
  embla.on('select', () => console.log('Selected a new index!'))
  -embla.destroy()
  ```
  ...and the methods are:
  