Добавил help и вынес название программы

build.sh

@@ -0,0 +1,2 @@
+#!/bin/bash
+mvn clean compile assembly:single

pom.xml

@@ -4,7 +4,7 @@
     <groupId>ru.khasanov</groupId>
     <artifactId>flash</artifactId>
     <packaging>jar</packaging>
-    <version>1.0-SNAPSHOT</version>
+    <version>0.1.0</version>
     <build>
         <plugins>
             <plugin>
@@ -15,6 +15,19 @@
                     <target>1.7</target>
                 </configuration>
             </plugin>
+            <plugin>
+                <artifactId>maven-assembly-plugin</artifactId>
+                <configuration>
+                    <archive>
+                        <manifest>
+                            <mainClass>ru.khasanov.Main</mainClass>
+                        </manifest>
+                    </archive>
+                    <descriptorRefs>
+                        <descriptorRef>jar-with-dependencies</descriptorRef>
+                    </descriptorRefs>
+                </configuration>
+            </plugin>
         </plugins>
     </build>
     <name>flash</name>

src/main/java/ru/khasanov/Main.java

@@ -24,8 +24,13 @@ private static void disableLogging() {
     public static void main(String[] args) {
         Settings settings = new Settings();
         JCommander jCommander = new JCommander(settings);
+        jCommander.setProgramName(Server.NAME);
         try {
             jCommander.parse(args);
+            if (settings.isHelp()) {
+                jCommander.usage();
+                return;
+            }
             if (!settings.isLoggingEnable()) {
                 disableLogging();
             }

src/main/java/ru/khasanov/Server.java

@@ -21,6 +21,7 @@
  * Created by bulat on 06.01.17.
  */
 public class Server {
+    public static final String NAME = "Flash";
     public static final String VERSION = "0.1.0";
     private static final Integer MIN_WORKER_COUNT = 2;
     private static final Logger logger = LoggerFactory.getLogger(Server.class);
@@ -88,7 +89,7 @@ public ServerSocketChannel initServerSocketChannel() throws IOException {
         serverSocketChannel.configureBlocking(false);
         SocketAddress socketAddress = new InetSocketAddress("localhost", settings.getPort());
         serverSocketChannel.socket().bind(socketAddress);
-        System.out.println(String.format("Started Flash %s server at %s", VERSION, socketAddress));
+        System.out.println(String.format("Started %s %s server at %s", NAME, VERSION, socketAddress));
         return serverSocketChannel;
     }
 

src/main/java/ru/khasanov/http/Response.java

@@ -28,7 +28,7 @@ public void setDefaultHeaders() {
     }
 
     public void setServerHeader() {
-        headers.put(ResponseHeader.SERVER, "Flash/" + Server.VERSION);
+        headers.put(ResponseHeader.SERVER, String.format("%s/%s", Server.NAME, Server.VERSION));
     }
 
     public StatusCode getStatusCode() {

src/main/java/ru/khasanov/settings/Settings.java

@@ -8,16 +8,20 @@
  * Created by bulat on 06.01.17.
  */
 public class Settings {
+    @Parameter(names = {"-h", "--help"}, help = true, description = "Display help information")
+    private boolean help = false;
     @Parameter(names = {"-c", "--cache"}, arity = 1, description = "Enable cache using")
     private boolean cacheEnable = true;
     @Parameter(names = {"-r", "--root-directory"}, description = "Set root directory path",
             validateWith = DirectoryExistsValidator.class)
     private String rootDirectory = "root_dir";
     @Parameter(names = {"-p", "--port"}, description = "Set port", validateWith = PortValidator.class)
     private int port = 8080;
-    @Parameter(names = {"-l", "--loggingEnable"}, arity = 1, description = "Enable logging")
+    @Parameter(names = {"-l", "--logging-enable"}, arity = 1, description = "Enable logging")
     private boolean loggingEnable = true;
-
+    public boolean isHelp() {
+        return help;
+    }
     public boolean isCacheEnable() {
         return cacheEnable;
     }