Revise README for WSO2 Integrator transition

[pcnfernando]

Updated README to reflect the evolution of WSO2 Enterprise Integrator to WSO2 Integrator and provide guidance for new projects.

Purpose

Describe the problems, issues, or needs driving this feature/fix and include links to related issues in the following format: Resolves issue1, issue2, etc.

Goals

Describe the solutions that this feature/fix will introduce to resolve the problems described above

Approach

Describe how you are implementing the solutions. Include an animated GIF or screenshot if the change affects the UI (email documentation@wso2.com to review all UI text). Include a link to a Markdown file or Google doc if the feature write-up is too long to paste here.

User stories

Summary of user stories addressed by this change>

Release note

Brief description of the new feature or bug fix as it will appear in the release notes

Documentation

Link(s) to product documentation that addresses the changes of this PR. If no doc impact, enter “N/A” plus brief explanation of why there’s no doc impact

Training

Link to the PR for changes to the training content in https://github.com/wso2/WSO2-Training, if applicable

Certification

Type “Sent” when you have provided new/updated certification questions, plus four answers for each question (correct answer highlighted in bold), based on this change. Certification questions/answers should be sent to certification@wso2.com and NOT pasted in this PR. If there is no impact on certification exams, type “N/A” and explain why.

Marketing

Link to drafts of marketing content that will describe and promote this feature, including product page changes, technical articles, blog posts, videos, etc., if applicable

Automation tests

• Unit tests

  Code coverage information

• Integration tests

  Details about the test cases and coverage

Security checks

• Followed secure coding standards in http://wso2.com/technical-reports/wso2-secure-engineering-guidelines? yes/no
• Ran FindSecurityBugs plugin and verified report? yes/no
• Confirmed that this PR doesn't commit any keys, passwords, tokens, usernames, or other secrets? yes/no

Samples

Provide high-level details about the samples related to this feature

Related PRs

List any other related PRs

Migrations (if applicable)

Describe migration steps and platforms on which migration has been tested

Test environment

List all JDK versions, operating systems, databases, and browser/versions on which this feature/fix was tested

Learning

Describe the research phase and any blog posts, patterns, libraries, or add-ons you used to solve the problem.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: fa3c5ff9-4aca-48b7-9baf-c813e79a5ca8

📥 Commits

Reviewing files that changed from the base of the PR and between c60376b and 9bf802a.

📒 Files selected for processing (1)

• README.md

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📝 Walkthrough

Summary

Updated the README.md file to include a prominent notice at the top informing users that WSO2 Enterprise Integrator has evolved into WSO2 Integrator. The new admonition block recommends that new integration projects use the latest WSO2 Integrator, while clarifying that this repository remains available and supported for existing WSO2 EI users. This change reflects the product's rebranding and transition while maintaining guidance for both new and existing project stakeholders.

Changes: +5 lines to README.md

Walkthrough

README.md receives a new five-line admonition block at the top of the document. The block uses a [!IMPORTANT] callout to state that WSO2 Enterprise Integrator has been rebranded as WSO2 Integrator, advises new integration projects to use the latest WSO2 Integrator product, and confirms that this repository remains available for existing WSO2 EI users. No other content in the file is modified.

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Description check	⚠️ Warning	The description begins with a clear summary but fails to complete required template sections, leaving most fields empty or placeholder text.	Complete the Purpose, Goals, Approach, User stories, Release note, and other required sections with specific details about this documentation update.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title accurately describes the main change: updating the README to communicate the WSO2 Enterprise Integrator rebrand to WSO2 Integrator.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch pcnfernando-patch-1

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[Copilot]

Pull request overview

Updates the top of the repository README to clearly communicate that WSO2 Enterprise Integrator (WSO2 EI) has evolved into WSO2 Integrator, guiding new projects toward the current product while indicating this repo remains relevant for existing EI users.

Changes:

• Added a GitHub callout at the top of README.md announcing the transition to WSO2 Integrator.
• Included guidance for new integration projects to start with WSO2 Integrator and clarified ongoing support context for existing EI users.

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