Add Ably

[tomczoink]

Project

https://github.com/ably/ably-ruby

Documentation

What is this Ruby project?

Ably's Ruby library provides REST and realtime communications into Ably using the Publish/Subscribe model. This can be used for cross-platform and cross-protocol communication, push notifications, and other communication tools.

What are the main difference between this Ruby project and similar ones?

Extends from the basic functionality provided by other WebSocket solutions, with features such as history of channels, presence, and support for cross-protocol communication.

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