remove built
remove built
add concurrent project
Merge remote-tracking branch 'origin/master'

Conflicts:
	nio-server/target/classes/META-INF/MANIFEST.MF
	nio-server/target/classes/lixl/nio/server/NIOSrvMain.class
	nio-server/target/classes/lixl/nio/server/ServerHandler.class
	nio.client/target/classes/META-INF/MANIFEST.MF
	nio.client/target/classes/lixl/nio/client/NIOClientMain.class
	nio.client/target/maven-archiver/pom.properties
	nio.client/target/nio.client-1.0-SNAPSHOT.jar
	nio.client/target/surefire-reports/TEST-lixl.nio.client.AppTest.xml
	nio.client/target/surefire-reports/lixl.nio.client.AppTest.txt