docs: add deprecation note

jooyoungseo · web-flow · commit 04ff377d6716 · 2025-01-24T16:43:39.000-05:00
diff --git a/README.md b/README.md
@@ -1,6 +1,8 @@
 mboxr
 =====
 
+* **Deprecation note**: This package is no longer actively maintained.
+
 <!-- badges: start -->
 
 [![CRAN

-Original file line number
+Diff line change
@@ @@ -1,6 +1,8 @@ @@
 mboxr
 =====
 +* **Deprecation note**: This package is no longer actively maintained.
++
 <!-- badges: start -->
 [![CRAN