no catch for wrong command

[LucasAmaralPires]

There is no catch in case the user types the wrong command. It is exemplified is the code below however it can be found throughout the switch statement in the function

freechains.kt/src/main/kotlin/org/freechains/host/Daemon.kt

Lines 208 to 220 in 42e50b4

	"keys" -> when (cmds[1]) {
	"shared" -> {
	val pass = reader.readLineX()
	writer.writeLineX(pass.toShared())
	}
	"pubpvt" -> {
	val pass = reader.readLineX()
	val keys = pass.toPubPvt()
	writer.writeLineX(
	keys.publicKey.asHexString + ' ' +
	keys.secretKey.asHexString
	)
	}