Test the help command with an example

cmd/help.go

@@ -21,7 +21,7 @@ Options:{{range .Options}}
 
 func helpCmd(cli.Args, config.Config) {
 	tmpl := template.Must(template.New("--help").Parse(helpUsage))
-	tmpl.Execute(os.Stderr, cli.Registry)
+	tmpl.Execute(os.Stdout, cli.Registry)
 }
 
 func init() {

cmd/help_test.go

@@ -0,0 +1,27 @@
+package cmd
+
+import (
+	"github.com/gsamokovarov/jump/cli"
+)
+
+func ExampleHelpCmd() {
+	helpCmd(cli.Args{}, nil)
+
+	// Output:
+	// Usage: jump [COMMAND ...]
+	//
+	// Jump to a fuzzy-matched directory passed as an argument.
+	//
+	// Commands:
+	//   cd           Fuzzy match a directory to jump to.
+	//   chdir        Update the score of directory during chdir.
+	//   clean        Cleans the database of inexisting entries.
+	//   hint         Hints relevant paths for jumping.
+	//   pin          Pin a directory to a search term.
+	//   shell        Display a shell integration script.
+	//   top          List the directories as they are scored.
+	//
+	// Options:
+	//   --help       Show this screen.
+	//   --version    Show version.
+}