Thanks to Ryan Glover - The Meteor Chef for the help in debugging and fixing the bugs.
The original source is from George Mcknight Youtube Meteor Upload and Import CSV tutorial.
Feel free to clone this repo for your own use.
Bug: Nothing happens if you click the "choose file" button on Firefox 38 running on Ubuntu 14.04 and Windows 7 but working as expected on Chromium Ubuntu 14.04 and Windows 7. Not sure on OS X.
If you happen to encounter the bug, please post it on issues, so that others can contribute and hopefully someone will fixed it.
Disclaimer: I am not the author of the code, credits to George Mcknight as he is the source and Ryan Glover for fixing significant bugs.
Thanks and Happy coding!