Update keywords.
Update keywords.

PolymerLabs/lit-element-starter-js,Polymer/lit-html,PolymerLabs/lit-element-starter-js,Polymer/lit-html,lit/lit,lit/lit,lit/lit,lit/lit,lit/lit-element-starter-js,Polymer/lit-html,lit/lit-element-starter-js,Polymer/lit-html