There are few options on how to Air Datepicker into your project.
Add the Air Datepicker css file link.
<link rel="stylesheet" href="assets/libs/air-datepicker/air-datepicker.css"></link>
Add the Air Datepicker js file link.
<script src="assets/libs/air-datepicker/air-datepicker.js"></script>
Below the example how to use the package and make it working ApexTree on any page.
HTML
<input type="text" class="form-control" id="human-friendly-picker" placeholder="Select a date" />
Javascript
<new AirDatepicker('#human-friendly-picker');
