Add Spring LDAP Samples

servlet/spring-boot/java/boot/README.adoc

@@ -0,0 +1,35 @@
+A Hello World Spring LDAP application using Spring Boot
+
+The application is protected by Spring Security and uses an embedded UnboundID container for its LDAP server.
+
+You can authenticate with HTTP basic using `bob`/`bobspassword`:
+
+[source,bash]
+----
+curl --user bob:bobspassword localhost:8080
+----
+
+And you should see the response:
+
+[source,bash]
+----
+Hello, bob
+----
+
+Also, you can hit the `cn` endpoint which uses `LdapTemplate` to query the datastore for the user's `cn` attribute value, like so:
+
+[source,bash]
+----
+curl --user bob:bobspassword localhost:8080/cn
+----
+
+This should result in:
+
+[source,bash]
+----
+[
+    "Bob Hamilton"
+]
+----
+
+To run the example, do `./gradlew :bootRun`.