Google has just released an IDE for building bots

Bottery is a syntax, editor, and simulator for prototyping generative contextual conversations.

The goal of Bottery is to help everyone, from designers to writers to coders, be able to write simple and engaging contextual conversational agents, and to test them out in a realistic interactive simulation, mimicking how they'd work on a "real" platform like API.AI.

I would definitely suggest you to take a look, it can be a game changer.

https://github.com/google/bottery