code: function getPackageName (platformPath) {
      // Can reliably read from package.windows.appxmanifest even if targeting Windows 10
      // because the function is only used for desktop deployment, which always has the same
      // package name when uninstalling / reinstalling
      try {
          return Q.when(AppxManifest.get(path.join(platformPath, 'package.windows.appxmanifest'))
              .getIdentity().getName());
      } catch (e) {
          return Q.reject('Can\'t read package name from manifest ' + e);
      }
  }
docs: return package name fetched from appxmanifest return rejected promise if appxmanifest not valid