Linting errors with zone.js >= v0.11.0

[Keith Gillette]

Attempting to update to zone.js >= v0.11.0 produces the following errors:

node_modules/meteor-rxjs/dist/zone.d.ts:1:23 - error TS2688: Cannot find type definition file for 'zone.js'.

1 /// <reference types="zone.js" />

node_modules/meteor-rxjs/dist/zone.d.ts:3:47 - error TS2304: Cannot find name 'Zone'.

3 export declare const zoneOperator: <T>(zone?: Zone) => (source: Observable<T>) => Observable<{}>;