Improve --exclude help text, closes #661

doc/fd.1

@@ -150,6 +150,9 @@ This option can be used repeatedly to allow for multiple possible file extension
 Exclude files/directories that match the given glob pattern.
 This overrides any other ignore logic.
 Multiple exclude patterns can be specified.
+Examples:
+  \-\-exclude '*.pyc'
+  \-\-exclude node_modules
 .TP
 .BI "\-\-ignore-file " path
 Add a custom ignore-file in '.gitignore' format.

src/app.rs

@@ -340,7 +340,10 @@ pub fn build_app() -> App<'static, 'static> {
                 .long_help(
                     "Exclude files/directories that match the given glob pattern. This \
                          overrides any other ignore logic. Multiple exclude patterns can be \
-                         specified.",
+                         specified.\n\n\
+                         Examples:\n  \
+                           --exclude '*.pyc'\n  \
+                           --exclude node_modules",
                 ),
         )
         .arg(