Update README.md - latest version

[alhirzel]

Suggest the latest version (2.5.1) rather than an older version on README (for PlatformIO users).

Summary by CodeRabbit

• Chores
  • Updated the required NimBLE-Arduino version to 2.5.1 or newer for PlatformIO projects.

[coderabbitai]

📝 Walkthrough

Walkthrough

Arrr, the README now requires NimBLE-Arduino ^2.5.1 for PlatformIO installation. No public declarations changed.

Changes

PlatformIO Dependency Documentation

Layer / File(s)	Summary
Update installation requirement README.md	The PlatformIO installation instruction now requires NimBLE-Arduino ^2.5.1 instead of ^2.1.0, arrr!

Estimated code review effort: 1 (Trivial) | ~2 minutes

Poem

A version flag sails ahead,
From ^2.1.0 to ^2.5.1 it’s led.
The README marks the chart,
With a tiny change of art.
Smooth seas for setup, matey!

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 inconclusive)

Check name	Status	Explanation	Resolution
Title check	❓ Inconclusive	The title identifies the README update but does not specify the NimBLE-Arduino dependency or version 2.5.1.	Specify the dependency and target version, for example: "Update README.md to require NimBLE-Arduino 2.5.1".

✅ Passed checks (4 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
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.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

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[coderabbitai]

Actionable comments posted: 1

🤖 Prompt for all review comments with AI agents

Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

Inline comments:
In `@README.md`:
- Line 34: Update the NimBLE-Arduino dependency version in docs/index.md to
match the canonical README.md recommendation of ^2.5.1, or regenerate
docs/index.md from that source while preserving the existing installation
instructions.

🪄 Autofix (Beta)

Fix all unresolved CodeRabbit comments on this PR:

• Push a commit to this branch (recommended)
• Create a new PR with the fixes

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ℹ️ Review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro Plus

Run ID: d0741820-6a81-49a5-8dbb-dcba91da5301

📥 Commits

Reviewing files that changed from the base of the PR and between 7b4c341 and f82a732.

📒 Files selected for processing (1)

• README.md

[h2zero]

Thanks!