v.1.0.3 - Feature - Define an icon or letter for a single paper-chip

• Adding iron-icons
• Icons and letters now optional

v.1.0.2 - Feature - Update the readme

Typo

v.1.0.1 - Feature - Update readme and demo

Added some examples in the README.md

v.1.0.0 - Feature - paper-chip element

• Added custom paper-chip element
• Style mixins for the paper-chip