Update instructions for integration with google calendar (#3558)

Co-authored-by: Joe Au-Yeung <65426560+joeauyeung@users.noreply.github.com>

.env.example

@@ -30,6 +30,8 @@ NEXT_PUBLIC_WEBAPP_URL='http://localhost:3000'
 NEXT_PUBLIC_WEBSITE_URL='http://localhost:3000'
 NEXT_PUBLIC_CONSOLE_URL='http://localhost:3004'
 NEXT_PUBLIC_EMBED_LIB_URL='http://localhost:3000/embed/embed.js'
+# Make sure you don't have .example.com as a value
+NEXTAUTH_DOMAIN='localhost:3000'
 
 # To enable SAML login, set both these variables
 # @see https://github.com/calcom/cal.com/tree/main/packages/ee#setting-up-saml-login

README.md

@@ -324,6 +324,22 @@ We have a list of [help wanted](https://github.com/orgs/calcom/projects/1/views/
 10. The key will be created and you will be redirected back to the Credentials page. Select the newly generated client ID under OAuth 2.0 Client IDs.
 11. Select Download JSON. Copy the contents of this file and paste the entire JSON string in the .env file as the value for GOOGLE_API_CREDENTIALS key.
 
+#### *Adding google calendar to Cal.com App Store*
+
+After adding Google credentials, you can now Google Calendar App to the app store.
+You can repopulate the App store by running
+
+```
+cd packages/prisma
+yarn seed-app-store
+```
+
+You will need to complete a few more steps to activate Google Calendar App.
+Make sure to complete section "Obtaining the Google API Credentials". After the do the
+following
+
+1. Add extra redirect URL `<Cal.com URL>/api/auth/callback/google`
+1. Under 'OAuth concent screen', click "PUBLISH APP"
 ### Obtaining Microsoft Graph Client ID and Secret
 
 1. Open [Azure App Registration](https://portal.azure.com/#blade/Microsoft_AAD_IAM/ActiveDirectoryMenuBlade/RegisteredApps) and select New registration