Unable to use PikaDay component in Ember project

I downloaded pikaday.js and put it my app's views directory, one of my view code looks like

    var picker = new Pikaday({
        field: formElement,
        format: "MM/DD/YYYY",
        firstDay: 1,
       .
       .
       .
    });

I tried all possible ways to include the external javascript pikaday.js to my ember project but I still continue to get the error: 'Pikaday' is not defined

Kindly let me know how to resolve the issue.