This is the default example with default settings.
The second section is open by default when activeIndex is set to 2.
This example has no active section. When activeIndex is false, closeAble is automatically set to true.
activeIndex may be an array of integers. For example if you pass [2, 4], section 2 and 4 will be open by default.
When the accordion contains only one section it will be open by default and closeAble set to true
To make it closed by default, set activeIndex to false
Set closeOther to false, so when a section is opened other section are not closed. This automatically set closeAble to true