fix(demo, media-query-status): should use async pipe with ObservableMedia
fix(demo, media-query-status): should use async pipe with ObservableMedia

References #415.

benbraou/flex-layout,atscott/flex-layout,angular/flex-layout,benbraou/flex-layout,benbraou/flex-layout,angular/flex-layout,atscott/flex-layout,angular/flex-layout,benbraou/flex-layout,atscott/flex-layout,atscott/flex-layout,angular/flex-layout