1.0.0-pre1: Document and 'test guarantee' an alternative usage, recommended with …

…polylint - we do support listing the properties in the element's 'properties:' member to keep polylint happy

1.0.0-pre: First Implementation

Added all infrastructure following https://aqovia.atlassian.net/wiki/display/WC/Best+Practices+For+Publishing+Polymer+Web+Components