Updating junit5 example projects (#135)

Removed simple-dhf4 project, as DHF 5.5 now has support and we don't want to be maintaining this example project anymore. The README still points to the 1.0.0 tag of this codebase though for DHF 4 users interested in this support.

Co-authored-by: Rob Rudin <[email protected]>

Author: rjrudin

marklogic-junit5/README.md

@@ -39,8 +39,25 @@ public class SearchTest extends AbstractSpringMarkLogicTest {
 If you'd like to use marklogic-junit5 on a regular ml-gradle project (not a DHF project), then 
 start with the ml-gradle example project to see a working example with instructions on how to get started. 
 
-## Getting started on a Data Hub Framework project
+## Getting started on a Data Hub Framework project 
 
-If you're working on a Data Hub Framework (DHF) project and you're like to start writing JUnit tests to verify your application 
-features, then check out the DHF example project to see a working example with instructions on how to get started.
+As of DHF 5.5, support exists within DHF 5 for writing tests and should be used instead of this project. 
+See [this example project](https://github.com/marklogic/marklogic-data-hub/tree/master/examples/reference-entity-model#testing-support) 
+for more information.
 
+If you're using DHF 4, see [the DHF 4 example project](https://github.com/marklogic-community/marklogic-unit-test/tree/1.0.0/marklogic-junit5/examples/simple-dhf4)
+from the 1.0.0 tag of this repository. 
+
+## Running the tests within this project
+
+If you'd like to run the tests within this project, you'll first need to create a gradle-local.properties file in this 
+project that defines your admin user's password - e.g. 
+
+    mlPassword=admin
+
+The tests will make use of MarkLogic's out-of-the-box Documents database. Be sure you do not have anything of importance 
+in this database, as it will be cleared before each test is run.
+
+You can then run the tests via Gradle:
+
+    ../gradlew clean test