Fix Firebase deploy

[chasenlehara]

See the error in this build:

{ Error
    at FirebaseError (/home/travis/build/donejs/chat/node_modules/firebase-tools/lib/error.js:11:17)
    at module.exports (/home/travis/build/donejs/chat/node_modules/firebase-tools/lib/responseToError.js:26:10)
    at Request._callback (/home/travis/build/donejs/chat/node_modules/firebase-tools/lib/api.js:32:23)
    at Request.self.callback (/home/travis/build/donejs/chat/node_modules/request/request.js:188:22)
    at emitTwo (events.js:125:13)
    at Request.emit (events.js:213:7)
    at Request.<anonymous> (/home/travis/build/donejs/chat/node_modules/request/request.js:1171:10)
    at emitOne (events.js:115:13)
    at Request.emit (events.js:210:7)
    at IncomingMessage.<anonymous> (/home/travis/build/donejs/chat/node_modules/request/request.js:1091:12)
  name: 'FirebaseError',
  message: 'Authentication required.',
  children: [],
  status: 500,
  exit: 1,
  stack: 'Error\n    at FirebaseError (/home/travis/build/donejs/chat/node_modules/firebase-tools/lib/error.js:11:17)\n    at module.exports (/home/travis/build/donejs/chat/node_modules/firebase-tools/lib/responseToError.js:26:10)\n    at Request._callback (/home/travis/build/donejs/chat/node_modules/firebase-tools/lib/api.js:32:23)\n    at Request.self.callback (/home/travis/build/donejs/chat/node_modules/request/request.js:188:22)\n    at emitTwo (events.js:125:13)\n    at Request.emit (events.js:213:7)\n    at Request.<anonymous> (/home/travis/build/donejs/chat/node_modules/request/request.js:1171:10)\n    at emitOne (events.js:115:13)\n    at Request.emit (events.js:210:7)\n    at IncomingMessage.<anonymous> (/home/travis/build/donejs/chat/node_modules/request/request.js:1091:12)',
  original: undefined,
  context: 
   { requestOptions: 
      { method: 'GET',
        json: true,
        url: 'https://admin.firebase.com/firebase/donejs-chat/token?token=-K1-_RrvCiiLvPgl1wS3%7C612c427cfc6721947275253179c88c84',
        files: undefined },
     body: { error: [Object] },
     response: 
      IncomingMessage {
        _readableState: [Object],
        readable: false,
        domain: null,
        _events: [Object],
        _eventsCount: 4,
        _maxListeners: undefined,
        socket: [Object],
        connection: [Object],
        httpVersionMajor: 1,
        httpVersionMinor: 1,
        httpVersion: '1.1',
        complete: true,
        headers: [Object],
        rawHeaders: [Array],
        trailers: {},
        rawTrailers: [],
        upgrade: false,
        url: '',
        method: null,
        statusCode: 401,
        statusMessage: 'Unauthorized',
        client: [Object],
        _consuming: true,
        _dumped: false,
        req: [Object],
        request: [Object],
        toJSON: [Function: responseToJSON],
        caseless: [Object],
        read: [Function],
        body: [Object] } } }