add Objective-C example link

[ccworld1000]

Changes in this pull request

Issue fixed: #

Checklist

• [ ] All tests pass. Demo project builds and runs.
• [ ] I added tests, an experiment, or detailed why my change isn't tested.
• [ ] I added an entry to the CHANGELOG.md for any breaking changes, enhancements, or bug fixes.
• [ ] I have reviewed the contributing guide

[TimOliver]

Hi @ccworld1000! Thanks for the cool PR! That's a very impressive amount of work rewriting the sample app in Objective-C!

I'm so sorry for the delay in reviewing this. We've changed IGListKit a fair bit since you filed this PR, and I noticed some of the sample sections are crashing now.

If you're still interested in having this included, can you please update your project for the latest version of IGListKit in the main branch? Thanks!

[TimOliver]

Closing this one off due to inactivity, but feel free to re-open if you want!