[globalcache] Add link to macOS iConvert GC port in docs (#14679)

* Update README.md

Add link to macOS port of iConvert.

diff --git a/bundles/org.openhab.binding.globalcache/README.md b/bundles/org.openhab.binding.globalcache/README.md
index 4348930b93c314c8b221c50ad7f05a6b79504034..8a0d304fd932a04698283839f1cefae10c6f6614 100644 (file)
--- a/bundles/org.openhab.binding.globalcache/README.md
+++ b/bundles/org.openhab.binding.globalcache/README.md
@@ -186,7 +186,9 @@ Here's an example of the hex code format:
 ```
 
 The [Global Cache iConvert utility](https://www.globalcache.com/files/docs/gc_iconvert_relnotes.txt) can be used to convert between the two formats, if desired.
-The iConvert utility is available on the Windows platform only.
+The Global Cache iConvert utility is available on the Windows platform only.
+A third party macOS port, [iConvert GC](https://www.rmartijnr.eu/iconvert.html), is available.
+
 Global Cache also maintains an online [IR Control Tower database](https://irdb.globalcache.com/) of IR codes.
 There are numerous other sources of IR codes, such as iRule and RemoteCentral.