chore(ruby): Add README file for ruby wrapper

[aakashanandg]

Add README file for ruby wrapper

[gemini-code-assist]

Summary of Changes

Hello @aakashanandg, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request introduces essential documentation for the spannerlib-ruby wrapper by adding a new README.md file. The README serves as a central resource for developers, covering the wrapper's purpose, setup instructions, testing procedures, and guidelines for contributing and troubleshooting. This addition significantly improves the discoverability and usability of the Ruby wrapper for Google Cloud Spanner.

Highlights

• New README File: A new README.md file has been added to the spannerlib-ruby wrapper directory, providing comprehensive documentation for the project.
• Wrapper Overview: The README explains that the Ruby wrapper uses FFI (Foreign Function Interface) to interact with Google Cloud Spanner via native C or Go libraries, highlighting its high performance and integration capabilities.
• Getting Started Guide: Detailed instructions are provided for setting up the environment, including prerequisites (Ruby, Bundler, FFI Gem, Go) and steps to install dependencies.
• Testing Procedures: The document outlines how to run both mock server tests (using rspec against an in-memory GRPC mock server) and integration tests (against the Google Spanner Emulator, with Docker setup instructions).
• Development Guidelines: Sections on linting with rubocop, contributing guidelines, and troubleshooting common issues like FFI load errors or missing gems are included.

Using Gemini Code Assist

The full guide for Gemini Code Assist can be found on our documentation page, here are some quick tips.

Invoking Gemini

You can request assistance from Gemini at any point by creating a comment using either /gemini <command> or @gemini-code-assist <command>. Below is a summary of the supported commands on the current page.

Feature	Command	Description
Code Review	/gemini review	Performs a code review for the current pull request in its current state.
Pull Request Summary	/gemini summary	Provides a summary of the current pull request in its current state.
Comment	@gemini-code-assist	Responds in comments when explicitly tagged, both in pull request comments and review comments.
Help	/gemini help	Displays a list of available commands.

Customization

To customize Gemini Code Assist for GitHub experience, repository maintainers can create a configuration file and/or provide a custom code review style guide (such as PEP-8 for Python) by creating and adding files to a .gemini/ folder in the base of the repository. Detailed instructions can be found here.

Limitations & Feedback

Gemini Code Assist may make mistakes. Please leave feedback on any instances where its feedback is incorrect or counter productive. You can react with 👍 and 👎 on @gemini-code-assist comments. If you're interested in giving your feedback about your experience with Gemini Code Assist for Github and other Google products, sign up here.

You can also get AI-powered code generation, chat, as well as code reviews directly in the IDE at no cost with the Gemini Code Assist IDE Extension.

Footnotes

1. Review the Privacy Notices, Generative AI Prohibited Use Policy, Terms of Service, and learn how to configure Gemini Code Assist in GitHub here. Gemini can make mistakes, so double check it and use code with caution. ↩

[gemini-code-assist]

Code Review

This pull request adds a README.md file for the Ruby wrapper, which is a great addition for new users. The documentation is well-structured and covers the main aspects of using the wrapper. I've added a couple of suggestions to improve clarity in the troubleshooting section and to fix a broken link.

[bhatt4982]

Plz check comments...

[bhatt4982]

LGTM...

[bhatt4982]

LGTM...