Extend show_help with packages-with-index (#160)

- add missing option description in usage message

Ref: 3e08cca

Signed-off-by: Michal Biesek <michalbiesek@gmail.com>

cr.sh

@@ -24,17 +24,18 @@ show_help() {
   cat <<EOF
 Usage: $(basename "$0") <options>
 
-    -h, --help               Display help
-    -v, --version            The chart-releaser version to use (default: $DEFAULT_CHART_RELEASER_VERSION)"
-        --config             The path to the chart-releaser config file
-    -d, --charts-dir         The charts directory (default: charts)
-    -o, --owner              The repo owner
-    -r, --repo               The repo name
-    -n, --install-dir        The Path to install the cr tool
-    -i, --install-only       Just install the cr tool
-    -s, --skip-packaging     Skip the packaging step (run your own packaging before using the releaser)
-        --skip-existing      Skip package upload if release exists
-    -l, --mark-as-latest     Mark the created GitHub release as 'latest' (default: true)
+    -h, --help                    Display help
+    -v, --version                 The chart-releaser version to use (default: $DEFAULT_CHART_RELEASER_VERSION)"
+        --config                  The path to the chart-releaser config file
+    -d, --charts-dir              The charts directory (default: charts)
+    -o, --owner                   The repo owner
+    -r, --repo                    The repo name
+    -n, --install-dir             The Path to install the cr tool
+    -i, --install-only            Just install the cr tool
+    -s, --skip-packaging          Skip the packaging step (run your own packaging before using the releaser)
+        --skip-existing           Skip package upload if release exists
+    -l, --mark-as-latest          Mark the created GitHub release as 'latest' (default: true)
+        --packages-with-index     Upload chart packages directly into publishing branch
 EOF
 }