Polish contribution

Closes gh-3499

spring-boot-samples/spring-boot-sample-data-couchbase/README.adoc

@@ -0,0 +1,22 @@
+= Spring Boot Couchbase Sample
+
+This sample demonstrates how you can store a simple document using Spring Data Couchbase.
+
+The sample expects couchbase to run on your machine with a bucket named `mybucket` and
+`couchbase` for the password. You can customize these settings in `application.properties`.
+
+Before you use the sample, you need _at least_ to create an `all` view for the `User`: go
+to the Couchbase server’s admin console and visit the Views screen, then click `Create
+Development View` and name it `all` with `user` as document name. On that view, you need
+to change the code to:
+
+```java
+function (doc, meta) {
+  if (doc._class == "sample.data.couchbase.User") {
+    emit(meta.id, null);
+  }
+}
+```
+
+and the _reduce_ function to `_count`. After you've saved your changes go back to `Views`
+and click on `Publish` so that the `all` view move to the `Production Views` tab.