docs(README.md): add pre-release notice

README.md

@@ -18,23 +18,22 @@ RedisSMQ is a Node.js library for queuing messages (aka jobs) and processing the
 ## Features
 
 * **[High-performance message processing](docs/performance.md)**.
-* **[Multi-Queue Producers](docs/producing-messages.md) & [Multi-Queue Consumers](docs/consuming-messages.md)**: Offering flexible Producer/Consumer models, with focus on simplicity and without tons of features. This can make RedisSMQ an ideal message broker for your microservices. 
+* **[Multi-Queue Producers](docs/producing-messages.md) & [Multi-Queue Consumers](docs/consuming-messages.md)**: Offering flexible Producer/Consumer models, with focus on simplicity and without tons of features. This can make RedisSMQ an ideal message broker for your microservices.
 * **[at-least-once/at-most-once Delivery](docs/api/classes/Message.md#setretrythreshold)**: In case of failures, while delivering or processing a message, RedisSMQ can guaranty that the message will be not lost and redelivered again. When configured to do so, RedisSMQ can also ensure that the message is delivered at-most-once.
-* **[Different Exchange Types](docs/message-exchanges.md)**: RedisSMQ offers 3 types of exchanges: [Direct Exchange](docs/message-exchanges.md#direct-exchange), [Topic Exchange](docs/message-exchanges.md#topic-exchange), and [FanOut Exchange](docs/message-exchanges.md#fanout-exchange) for publishing a message to one or multiple queues. 
+* **[Different Exchange Types](docs/message-exchanges.md)**: RedisSMQ offers 3 types of exchanges: [Direct Exchange](docs/message-exchanges.md#direct-exchange), [Topic Exchange](docs/message-exchanges.md#topic-exchange), and [FanOut Exchange](docs/message-exchanges.md#fanout-exchange) for publishing a message to one or multiple queues.
 * **[FIFO queues, LIFO queues, and Reliable Priority Queues](docs/queues.md)**: Provides different queuing strategies that you may use depending on your needs and requirements.
 * **[Message Expiration](docs/api/classes/Message.md#setttl)**: Allowing a message to expire if it has not been delivered within a given amount of time.
 * **[Message Consumption Timeout](docs/api/classes/Message.md#setconsumetimeout)**: Allowing to set up a timeout for consuming messages.
 * **[Queue Rate Limiting](docs/queue-rate-limiting.md)**: Allowing to control the rate at which the messages are consumed from a given queue.
 * **[Scheduling Messages](docs/scheduling-messages.md)**: Messages can be configured to be delayed, delivered for N times with an optional period between deliveries, and to be scheduled using CRON expressions.
-* **[Multiplexing](/docs/multiplexing.md)**: A feature which allows message handlers to use a single redis connection to dequeue and consume messages.  
+* **[Multiplexing](/docs/multiplexing.md)**: A feature which allows message handlers to use a single redis connection to dequeue and consume messages.
 * **[HTTP API](https://github.com/weyoss/redis-smq-monitor)**: an HTTP interface is provided to interact with the MQ.
 * **[Web UI](https://github.com/weyoss/redis-smq-monitor-client)**: RedisSMQ can be managed also from your web browser.
 * **[Logging](https://github.com/weyoss/redis-smq-common/blob/master/docs/logs.md)**: RedisSMQ comes with a built-in JSON logger, but can also use your application logger.
 * **[Configurable](docs/configuration.md)**: Many options and features can be configured.
 * **[Multiple Redis clients](docs/configuration.md)**: Depending on your preferences, RedisSMQ can use either [node-redis v3](https://github.com/redis/node-redis/tree/v3.1.2), [node-redis v4](https://github.com/redis/node-redis), or [ioredis](https://github.com/luin/ioredis).
 * **[Highly optimized](https://lgtm.com/projects/g/weyoss/redis-smq/context:javascript)**: Strongly-typed and implemented using pure callbacks, with small memory footprint and no memory leaks. See [Callback vs Promise vs Async/Await benchmarks](https://gist.github.com/weyoss/24f9ecbda175d943a48cb7ec38bde821).
 
-
 ## RedisSMQ Use Case: Multi-Queue Producers & Multi-Queue Consumers
 
  
@@ -45,6 +44,19 @@ RedisSMQ is a Node.js library for queuing messages (aka jobs) and processing the
 
 :rocket: RedisSMQ v8 is coming soon!
 
+## Installation
+
+> Currently, RedisSMQ is going under heavy development. Pre-releases at any time may introduce new commits with broken changes. To view the latest release reference see [RedisSMQ v7.2.3](https://github.com/weyoss/redis-smq/tree/v7.2.3)
+
+```shell
+npm i redis-smq@rc
+```
+
+Considerations:
+
+- Minimal Node.js version is >= 18 (RedisSMQ is tested under current active LTS and maintenance LTS Node.js releases).
+- Minimal Redis server version is 2.8.0.
+
 ## Usage
 
 RedisSMQ provides 3 classes in order to work with the message queue: `Message`, `Producer`, and `Consumer`.