Update dependencies & fixed deprecation warnings

[Laoujin]

@LIT-labs@react has a new creatComponent syntax:

export const WiredInput = createComponent({
  react: React,
  tagName: 'wired-input',
  elementClass: _WiredInput,
  events: {
    onChange: 'input',
    onchange: 'input'
  }
});

I also changed rm -rf to rimraf so it works cross-platform