Source formatting
Add keywords to package.json
Merge branch 'patch-1' of github.com:zenorocha/slush-custom-element into zenorocha-patch-1

* 'patch-1' of github.com:zenorocha/slush-custom-element:
  Source formatting
Merge branch 'zenorocha-patch-1'

* zenorocha-patch-1:
  Source formatting