Add paper-chip third-party element as alternative

[patrinhani-ciandt]

Check if it's possible to add this paper-chip component as a third-party element: https://github.com/WebPaperElements/paper-chip based on (http://www.google.com.br/design/spec/components/chips.html) Here is the Demo: http://webpaperelements.github.io/paper-chip/components/paper-chip/demo/