add project: HelloWorld
#	new file:   HelloWorld/.actionScriptProperties
#	new file:   HelloWorld/.flexProperties
#	new file:   HelloWorld/.project
#	new file:   HelloWorld/.settings/org.eclipse.core.resources.prefs
#	new file:   HelloWorld/src/Greeter.as
#	new file:   HelloWorld/src/HelloWorld-app.xml
#	new file:   HelloWorld/src/HelloWorld.mxml