setup README and requirements

README.md

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+# Kafka Example
+
+This is a very simple application to demonstrate how to set up a Kafka instance, create a consumer and a producer, and send and receive messages.
+
+## Setup
+
+1) Create a virtual environment
+2) Install required libraries
+```zsh
+pip3 install -r requirements.txt 
+```
+3) Run Kafka using Docker Compose
+```zsh
+docker compose up
+```
+4) Run tracker.py
+```zsh
+python3 src/tracker.py
+```
+5) Run producer.py
+```zsh 
+python3 src/producer.py
+```
+6) Confirm messages in terminal

requirements.txt

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+confluent-kafka