message: [Slack] Add redirectUri in getInstallLink()
diff: @@ -224,7 +224,7 @@ export class SlackAdapter extends BotAdapter {
  */
  public getInstallLink(): string {
  if (this.options.clientId && this.options.scopes) {
  - const redirect = 'https://slack.com/oauth/authorize?client_id=' + this.options.clientId + '&scope=' + this.options.scopes.join(',');
  + const redirect = 'https://slack.com/oauth/authorize?client_id=' + this.options.clientId + '&scope=' + this.options.scopes.join(',') + '&redirect_uri=' + this.options.redirectUri;
  return redirect;
  } else {
  throw new Error('getInstallLink() cannot be called without clientId and scopes in adapter options');
  