Quick fix, but let's parse the jail command if no args.

src/main/java/com/graywolf336/jail/command/JailHandler.java

@@ -30,6 +30,9 @@ public class JailHandler {
 	}
 
 	public void handleCommand(JailManager jm, CommandSender sender, String... args) {
+		if(args.length == 0) {
+			parseCommand(jm, sender, getMatches("jail").get(0), args);
+		}else {
 			JailFoundation foundation = new JailFoundation();
 			JCommander jc = new JCommander(foundation);
 			
@@ -54,6 +57,7 @@ public class JailHandler {
 				parseCommand(jm, sender, getMatches("jail").get(0), args);
 			}
 		}
+	}
 	
 	/**
 	 * Handles the given command and checks that the command is in valid form.