sdfMerge branch '73-source-connector-issue-tombstones' of github.com:…

…cloudant-labs/kafka-connect-cloudant into 73-source-connector-issue-tombstones

README.md

@@ -80,8 +80,8 @@ Single Message Transforms, or SMTs, can be used to customize fields or values of
     ```
 1. If you have events where there is no value ([_tombstone_ events](https://kafka.apache.org/documentation.html#compaction)), you may wish to filter these out.
     - In the Cloudant sink connector, these may be undesirable as they will generate an empty document.
-    - In the Cloudant source connector, tombstone events are generated by default for deleted documents (in addition to the deleted document itself).
-    - In either case, you will need to use a `dropNullRecords` transform and predicate to filter out and remove these tombstone events:
+    - In the Cloudant source connector, tombstone events are generated for deleted documents (in addition to the deleted document itself).
+    - In either case, you can use the `RecordIsTombstone` predicate with a filter to remove these tombstone events as shown in this example:
 
     ```
     transforms=dropNullRecords

src/test/java/com/ibm/cloud/cloudant/kafka/connect/TombstoneTest.java

@@ -27,8 +27,9 @@ public class TombstoneTest {
 
     private static final String connectionName = "_mock";
 
+    // test that both the original document with _deleted = true, and a tombstone are emitted
     @Test
-    public void foo() throws Exception{
+    public void testDeletedDocumentEmitsTombstone() throws Exception{
 
         String id = "123";