Add the README's example as a separate project

This provides a minimal test executable for quickly trying out JAnsi. Run
it like

$ mvn --projects example exec:java

example/pom.xml

@@ -0,0 +1,43 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<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/xsd/maven-4.0.0.xsd">
+    <parent>
+        <artifactId>jansi-project</artifactId>
+        <groupId>org.fusesource.jansi</groupId>
+        <version>1.13-SNAPSHOT</version>
+    </parent>
+    <modelVersion>4.0.0</modelVersion>
+
+    <artifactId>example</artifactId>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.fusesource.jansi</groupId>
+            <artifactId>jansi</artifactId>
+            <version>${project.parent.version}</version>
+        </dependency>
+    </dependencies>
+
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-compiler-plugin</artifactId>
+                <configuration>
+                    <source>1.5</source>
+                    <target>1.5</target>
+                </configuration>
+            </plugin>
+            <plugin>
+                <groupId>org.codehaus.mojo</groupId>
+                <artifactId>exec-maven-plugin</artifactId>
+                <version>1.4.0</version>
+                <configuration>
+                    <mainClass>org.fusesource.jansi.Main</mainClass>
+                </configuration>
+            </plugin>
+        </plugins>
+    </build>
+
+</project>

example/src/main/java/org/fusesource/jansi/Main.java

@@ -0,0 +1,12 @@
+package org.fusesource.jansi;
+
+import static org.fusesource.jansi.Ansi.*;
+import static org.fusesource.jansi.Ansi.Color.*;
+
+public class Main {
+    public static void main(String[] args) {
+        AnsiConsole.systemInstall();
+        System.out.println( ansi().eraseScreen().fg(RED).a("Hello").fg(GREEN).a(" World").reset() );
+        AnsiConsole.systemUninstall();
+    }
+}

pom.xml

@@ -316,6 +316,7 @@
 
   <modules>
     <module>jansi</module>
+    <module>example</module>
     <!--
     <module>jansi-website</module>
     -->