Add starter, make adapter kick in only if needed

pom.xml

@@ -28,6 +28,7 @@
 		<module>spring-shell-jcommander-adapter</module>
 		<module>spring-shell-samples</module>
 		<module>spring-shell-shell1-adapter</module>
+		<module>spring-shell-starter</module>
 	</modules>
 
 	<dependencyManagement>
@@ -63,6 +64,11 @@
 				<artifactId>spring-shell-jcommander-adapter</artifactId>
 				<version>${project.version}</version>
 			</dependency>
+			<dependency>
+				<groupId>org.springframework.shell</groupId>
+				<artifactId>spring-shell-starter</artifactId>
+				<version>${project.version}</version>
+			</dependency>
 			<!-- OTHER DEPS -->
 			<dependency>
 				<groupId>org.jline</groupId>