error loading : async discoverAsync...syntax error: unexpected identifier etc.
Hello,

Recently switched from a different plugin which could only use the no-longer-free API from wunderground, but I'm having trouble loading the weather-plus plugin (with darksky).  My log info is below, any help or ideas to try would be greatly appreciated!  

/Users/jngothia/.npm-packages/lib/node_modules/homebridge-weather-plus/node_modules/googleapis/build/src/googleapis.js:81
    async discoverAsync(url) {
          ^^^^^^^^^^^^^
SyntaxError: Unexpected identifier
    at Object.exports.runInThisContext (vm.js:76:16)
    at Module._compile (module.js:542:28)
    at Object.Module._extensions..js (module.js:579:10)
    at Module.load (module.js:487:32)
    at tryModuleLoad (module.js:446:12)
    at Function.Module._load (module.js:438:3)
    at Module.require (module.js:497:17)
    at require (internal/module.js:20:19)
    at Object.<anonymous> (/Users/jngothia/.npm-packages/lib/node_modules/homebridge-weather-plus/node_modules/googleapis/build/src/index.js:19:22)
    at Module._compile (module.js:570:32)
    at Object.Module._extensions..js (module.js:579:10)
    at Module.load (module.js:487:32)
    at tryModuleLoad (module.js:446:12)
    at Function.Module._load (module.js:438:3)
    at Module.require (module.js:497:17)
    at require (internal/module.js:20:19)
    at Object.<anonymous> (/Users/jngothia/.npm-packages/lib/node_modules/homebridge-weather-plus/node_modules/fakegato-history/lib/googleDrive.js:7:18)
    at Module._compile (module.js:570:32)
    at Object.Module._extensions..js (module.js:579:10)
    at Module.load (module.js:487:32)
    at tryModuleLoad (module.js:446:12)
    at Function.Module._load (module.js:438:3)