add layout demo
#	new file:   layout/.actionScriptProperties
#	new file:   layout/.flexProperties
#	new file:   layout/.project
#	new file:   layout/.settings/org.eclipse.core.resources.prefs
#	new file:   layout/src/layout-app.xml
#	new file:   layout/src/layout.mxml
#	new file:   layout/src/views/absolutelayout.mxml
#	new file:   layout/src/views/anchorlayout.mxml
#	new file:   layout/src/views/autolayout.mxml
#	new file:   layout/src/views/limitlayout.mxml
#	new file:   layout/src/views/scroller.mxml