The header for child themes. Make sure to modify the template variable and the @import url to match your current theme name.

Child Theme Style.css Starter

/*
Theme Name:     Macho Child Theme
Theme URI:      http://demo.themebeans.com/macho
Description:    Make your modifications to this child theme.
Author:         Rich Tabor / ThemeBeans
Author URI:     http://themebeans.com
Version:        1.0
Template:       macho
*/

@import url('../macho/style.css');