To start simple Jetty server with Maven, download and install Maven, after that create and import project (in my case I created project in C:\Users\myUserName\Documents\myJetty\my-firstJettyTest) as I already explained here. Open pom.xml, and it should look like: 

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <groupId>myJetty</groupId>
  <artifactId>my-firstJettyTest</artifactId>
  <packaging>jar</packaging>
  <version>1.0-SNAPSHOT</version>
  <name>my-firstJettyTest</name>
  <url>http://maven.apache.org</url>
  <dependencies>
  
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>3.8.1</version>
      <scope>test</scope>
    </dependency>
    
	<dependency>
		<groupId>org.eclipse.jetty</groupId>
		<artifactId>jetty-websocket</artifactId>
		<version>8.1.12.v20130726</version>
	</dependency>
	
	<dependency>
		<groupId>org.eclipse.jetty</groupId>
		<artifactId>jetty-server</artifactId>
		<version>8.1.12.v20130726</version>
	</dependency>
    
  </dependencies>
  
	<build>
		<plugins>
		
			<plugin>
				<groupId>org.mortbay.jetty</groupId>
				<artifactId>jetty-maven-plugin</artifactId>
				<version>8.1.11.v20130520</version>
				<configuration>
					<scanIntervalSeconds>10</scanIntervalSeconds>
					<stopPort>8005</stopPort>
					<stopKey>STOP</stopKey>
					<contextPath>/</contextPath>
				</configuration>
				<executions>
					<execution>
						<id>start-jetty</id>
						<phase>pre-integration-test</phase>
						<goals>
							<goal>run</goal>
						</goals>
						<configuration>
							<scanIntervalSeconds>0</scanIntervalSeconds>
							<daemon>true</daemon>
						</configuration>
					</execution>
					<execution>
						<id>stop-jetty</id>
						<phase>post-integration-test</phase>
						<goals>
							<goal>stop</goal>
						</goals>
					</execution>
				</executions>
			</plugin>

		
		</plugins>
	</build>
		
</project>

Then open command line in same folder where your project is, and you can execute:

mvn jetty:run

After that in your browser write something like: 127.0.0.1:8080 - Jetty by default starts on port 8080

In my case, I have created one index.html file and I place it here:

C:\Users\myUserName\Documents\myJetty\my-firstJettyTest\src\main\webapp