message: Fixed readme formatting.
diff: We defined generic kafka interfaces (IProducer and IConsumer) that can be implemented using different libraries. We have two implemenations right now ([kafka-node](https://github.com/SOHU-Co/kafka-node) and [kafka-rest](https://github.com/confluentinc/kafka-rest-node)). The implementations are easily swappable through simple config change - i.e.
  -`"kafka": {
  +```json
  +kafka": {
  "lib": {
  "name": "kafka-node",
  "endpoint": "zookeeper:2181"
  }
  -}`
  \ No newline at end of file
  +}
  +```
  \ No newline at end of file
  