Update Cryptocurrency Trading Bot tutorial

[rohanxminocha]

Description

Improvements of Cryptocurrency Trading Bot

Motivation and Context

The updated version of the tutorial uses the API Key from Coinbase Pro, which allows the Cryptocurrency Trading Bot to be used. Whereas the previous version (this: https://towardsdatascience.com/build-a-cryptocurrency-trading-bot-with-r-1445c429e1b1) used an API that is no longer in service

How Has This Been Tested?

Types of changes

• [ ] Content Update (change which fixes an issue or updates an already existing submission)
• [x] New Article (change which adds functionality)
• [x] Documentation change

Checklist:

• [x] My code follows the code style of this project.
• [x] I have updated the documentation accordingly.
• [x] I have read the CONTRIBUTING document.
• [x] I have made checks to ensure URLs and other resources are valid

[curryche]

你好，你的邮件我已收到。