can't import npm package using ember-browsify (Uncaught Error: Could not find module)

In my ember application I have installed ember-browserify by running

npm install ember-browserify --save

I have then installed pit-scheduler by running

npm install pit-scheduler --save

and then I have restarted ember but when I go to the page I get this error

Uncaught Error: Could not find module npm:pit-scheduler imported from my-app/routes/schedule

Is it because I need to also npm install all of the dependency packages somehow? in the actual package example these are packages which are being imported

<script src="js/jquery-2.2.4.min.js"></script>
<script src="js/bootstrap.min.js"></script>
<script src="js/moment-with-locales.min.js"></script>
<script src="js/bootstrap-datetimepicker.js"></script>
<script src="../dist/js/pitscheduler.min.js"></script>

I have already installed these packages by running npm install as well but still the same issue. Any idea why that is the case?

url to the packages

http://ift.tt/2k7zHpV
http://ift.tt/2iIyARC