Add missing interface (maybe Lucas has a version with Javadocs?)

execution/src/main/java/org/springframework/batch/execution/bootstrap/SynchronousJobLauncher.java

@@ -0,0 +1,16 @@
+package org.springframework.batch.execution.bootstrap;
+
+import org.springframework.batch.core.configuration.NoSuchJobConfigurationException;
+import org.springframework.batch.repeat.ExitStatus;
+
+public interface SynchronousJobLauncher {
+
+	boolean isRunning();
+
+	ExitStatus run();
+
+	ExitStatus run(String jobName) throws NoSuchJobConfigurationException;
+
+	void stop();
+
+}