update env var example & readme

.env.example

@@ -1,11 +1,20 @@
+# development
+
+# set these values from the firebase project settings
 NEXT_PUBLIC_FIREBASE_API_KEY=""
 NEXT_PUBLIC_FIREBASE_AUTH_DOMAIN=""
-NEXT_PUBLIC_FIREBASE_DATABASE_URL=""
 NEXT_PUBLIC_FIREBASE_PROJECT_ID=""
-NEXT_PUBLIC_PROJECT_ID=""
 NEXT_PUBLIC_FIREBASE_STORAGE_BUCKET=""
 NEXT_PUBLIC_FIREBASE_MESSAGING_SENDER_ID=""
 NEXT_PUBLIC_FIREBASE_APP_ID=""
-NEXT_PUBLIC_BASE_URL=""
-NEXT_PUBLIC_PRIVATE_KEY=""
-NEXT_PUBLIC_CLIENT_EMAIL=""
+
+# set this value from the "Realtime Database" --> "Data"
+NEXT_PUBLIC_FIREBASE_DATABASE_URL=""
+
+# using localhost for the local development
+NEXT_PUBLIC_BASE_URL="http://localhost:3000"
+
+# set these values from .json file in the "Service accounts" --> "Firebase Admin SDK"
+NEXT_PUBLIC_PROJECT_ID=""
+NEXT_PUBLIC_PRIVATE_KEY="" #example for this value "-----BEGIN PRIVATE KEY-----\nMIIEugIBADANBgkqhkiG9w0BAQEFAASCBKQwggSgAgEAAoIBAQCki3egFXIppEwK.........."
+NEXT_PUBLIC_CLIENT_EMAIL=""

README.md

@@ -14,7 +14,8 @@ cd PamerAjaDulu
 ```bash
 npm install
 ```
-- rename file `.env.example` menjadi `.env`, kemudian isi semua value yg dibutuhkan
+- copy file `.env.example` dan paste di tempat yang sama
+- rename file `.env.example` yang hasil copy-paste tadi menjadi `.env`, kemudian isi semua value yg dibutuhkan
 - jalankan projectnya menggunakan
 ```bash
 npm run dev