add program description

cmd/root.go

@@ -91,13 +91,10 @@ func milkbucket(cmd *cobra.Command, args []string) {
 // rootCmd represents the base command when called without any subcommands
 var rootCmd = &cobra.Command{
 	Use:   "milkbucket",
-	Short: "A brief description of your application",
-	Long: `A longer description that spans multiple lines and likely contains
-examples and usage of using your application. For example:
+	Short: "Audio visualizer",
+	Long: `milkbucket is an audio visualizer.
 
-Cobra is a CLI library for Go that empowers applications.
-This application is a tool to generate the needed files
-to quickly create a Cobra application.`,
+It uses Milkdrop preset files to generate visualizations from standard input.`,
 	Run: milkbucket,
 }