Paper-Button is not working in polymer..?

I created Paper-button but its not working on my web-browser.I tried many ways to solve but didn't work.Here are snaps Of all code and library. Thanks. [![ImageofCode][1]][1] [![ImageOfSource][2]][2] [![OutPutofpaper-button][3]][3] [1]: http://ift.tt/21oRf4F [2]: http://ift.tt/1R9e81j [3]: http://ift.tt/21oRcGa