Updated doc for thumbnail cache

1 files changed, 1 insertions, 0 deletions

diff --git a/README.md b/README.md
index 0d50674..424caf2 100644
--- a/README.md
+++ b/README.md
@@ -36,6 +36,7 @@ sxiv supports the following command-line options:
 
     -a           Display all given files, do not filter out unsupported files
                  (shorter startup time for long file list or slow file types)
+    -C           Remove all orphaned cache files from thumbnail cache and exit
     -d           Scale all images to 100%, but fit large images into window
     -F           Use size-hints to make the window fixed/floating
     -f           Start in fullscreen mode