Ensure standardjs preset works standalone

[jaridmargolin]

The standardjs preset has been confirmed to support jsx when using the react preset. It is thought this may only work because the react preset includes eslint-plugin-react.

We should ensure that the standardjs preset works standalone with jsx. Would recommend extending to use standard-react as seen here: https://github.com/jaridmargolin/neutrino-contrib/blob/master/packages/neutrino-middleware-standardreact/src/index.js#L19