fix readme and export slasHelpers correctly

Author: joeluong-sfcc

README.md

@@ -137,10 +137,10 @@ async function getGuestUserAuthToken(): Promise<ShopperLoginTypes.TokenResponse>
 }
 
 // Alternatively you may use the SLAS helper functions to generate JWT/access token
-const guestTokenResponse = await slasHelpers.loginGuestUser(
-    new ShopperLogin(config), 
-    { redirectURI: 'http://localhost:3000/callback' }
-  )
+const guestTokenResponse = await slasHelpers.loginGuestUser({
+    slasClient: new ShopperLogin(config), 
+    parameters: { redirectURI: 'http://localhost:3000/callback' }
+  })
   .then((guestTokenResponse) => {
     console.log("Guest Token Response: ", guestTokenResponse);
     return guestTokenResponse;

templates/index.ts.hbs

@@ -4,7 +4,5 @@ import type * as {{apiName}}Types from "./{{directoryName}}";
 export type { {{apiName}}Types };
 {{/each}}
 
-import * as helpers from "./helpers";
-export { helpers };
-
+export { helpers, slasHelpers } from "./helpers";
 export { ClientConfig, CommonParameters, sdkLogger } from "@commerce-apps/core"