gistfile1.js

    contentView: SC.TabView.design({
        layout: {
            top: 10,
            right: 10,
            bottom: 10,
            left: 10
        },
        items: [
					{	title: 'News',			value: 'news' },
					{	title: 'Assignments', 	value: 'DarkHorse.CourseView.AssignmentsView' },
					{	title: 'Grades',		value: 'grades' },
					{	title: 'Discussion',	value: 'discuss' },
					{	title: 'Resources',		value: 'resources' }
		],
        itemTitleKey: 'title',
        itemValueKey: 'value',

        value: 'news'

    }),

	AssignmentsView: SC.View.design({
		layout: { top: 0, right: 0, bottom: 0, left: 0 },
		childViews: 'viewName'.w(),
		backgroundColor: 'red'
	})