diff --git a/.env.example b/.env.example
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--- /dev/null
+++ b/.env.example
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+API_KEY=my-super-secret-api-key
+PORT=3000
diff --git a/README.MD b/README.MD
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+++ b/README.MD
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+# Android App Middleware Firebase
+
+- add `serviceAccountKey.json` 
+- install nodejs & requirements
+- run app
\ No newline at end of file