Implemented hybrid mode to support Polymer 1.x and 2.x

Implemented hybrid mode, updated documentation and reworked demo.

Replaced on-click with on-tap event

Should improve usability on mobile devices

Fixed layout problem

0.0.4

Removed flex class from paper-button

Added on-change event

0.0.3

Fixed margins

Added left-to-right switch

0.0.2

Added component page

Initial release

0.0.1

Shrink paper-buttons width on small screens