Update README.md

demos/supabase-auth/README.md

@@ -3,9 +3,41 @@
 ## Run locally
 
 1. Create a supabase account here https://app.supabase.com/
-2. Copy `.env.example` to `.env` and fill in the values from your supabase dashboard and add the moralis api key
-3. Open `public/script.js`, and fill in the values (located at the top of the file) from your supabase dashboard
-4. Run `yarn dev` to run the server locally
+2. You need to setup your Supabase Database so it can store your users. Go to `SQL Editor` in your Supabase account and run the following SQL query:
+
+```
+create table
+  public.users (
+    id bigint generated by default as identity,
+    created_at timestamp with time zone not null default now(),
+    moralis_provider_id character varying null,
+    metadata json null,
+    constraint users_pkey primary key (id)
+  ) tablespace pg_default;
+
+alter table "public"."users" enable row level security;
+
+CREATE POLICY "Only authed users can SELECT their row" ON "public"."users"
+AS PERMISSIVE FOR SELECT
+TO authenticated
+USING (true)
+```
+
+<img width="2294" alt="Screenshot 2023-11-26 at 12 23 04" src="https://github.com/MoralisWeb3/Moralis-JS-SDK/assets/11097108/994b0697-01cf-4e27-8f56-b9c50ea4b255">
+
+If you view your database, you can double-check that the query was executed correctly. You should see a table called `users` with the following columns and `1 active RLS policy` at the top.
+
+<img width="2276" alt="Screenshot 2023-11-26 at 12 23 48" src="https://github.com/MoralisWeb3/Moralis-JS-SDK/assets/11097108/cee7e888-4901-4ca0-ae61-dfd8418cb7f5">
+
+You should see this if you click on that `1 active RLS policy`. This ensures that only authenticated users can view their data.
+
+<img width="2560" alt="Screenshot 2023-11-26 at 12 24 57" src="https://github.com/MoralisWeb3/Moralis-JS-SDK/assets/11097108/f19956fc-54b0-493b-b7fb-79a0aa3f0b77">
+
+
+
+4. Copy `.env.example` to `.env` and fill in the values from your supabase dashboard and add the moralis api key
+5. Open `public/script.js`, and fill in the values (located at the top of the file) from your supabase dashboard
+6. Run `yarn dev` to run the server locally
 
 Now your server is running locally with the following endpoints: