.js

async install(repo){
    this.github = await User.githubClient(this.user.id);
    repo = await this.saveRepo(repo);
    await this.savePullRequests(repo);
    await this.ensureInstallerIsMember(repo);
    return this.saveLabels(repo);
  }

  install(repo){
    return User.getGithubTokens(this.user.id).then( (tokens) => {
      this.github = new Github(tokens.access_token);
      return this.saveRepo(repo)
                 .then(this.addMember.bind(this))
                 .then(this.savePullRequests.bind(this))
                 .then(this.saveLabels.bind(this))
    });
  }