Updated README to set Java version minimum is Java 8

cppwfs · cppwfs · commit 52dc6a3f5c4b · 2020-08-18T19:49:02.000-04:00
resolves issue #708
diff --git a/spring-cloud-task-samples/task-events/README.adoc b/spring-cloud-task-samples/task-events/README.adoc
@@ -4,7 +4,7 @@ This is a task application that emits events on a channel named `task-events`
 
 == Requirements:
 
-* Java 7 or Above
+* Java 8 or Above
 
 == Build:
 
