update README.md

Author: AlaeddineMessadi

README.md

@@ -1,2 +1,47 @@
-# MongoDB-Replication-Set-docker-compose
-MongoDB Replication Set with Docker Compose
+# Local MongoDB Replica Set deployment with docker-compose
+
+Local setup MongoDB server with replication set using docker-compose
+
+The MongoDB database connector uses transactions to support nested writes.
+We get errors if we try to actually write to a database that does not have replication.
+
+### You have two solutions:
+
+1. Use [MongoDB Atlas](https://www.mongodb.com/atlas/database). It is a free-service where we can create MongoDB cluster that supports replication.
+2. Setup a local MongoDB server with replication
+
+
+## Installation
+
+Clone the project
+
+```bash
+  git clone [email protected]:AlaeddineMessadi/Mongodb-Replica-Set-docker-compose.git mongodb-replset
+```
+
+Go to the project directory
+
+```bash
+  cd mongodb-replset
+```
+
+Start the server
+
+```bash
+  ./start_db.sh
+```
+
+
+## Tech Stack
+
+- Docker (docker-compose)
+- YAML
+- Bash
+
+## Contributing
+
+Pull requests are welcome. For major changes, please open an issue first to discuss what you would like to change.
+
+## License
+
+[MIT](https://choosealicense.com/licenses/mit/)