BAEL-737 README (#1514)

* Add files via upload

* Update pom.xml

* Update RunGuice.java

* Update Communication.java

* Update CommunicationMode.java

* Update DefaultCommunicator.java

* Update EmailCommunicationMode.java

* Update IMCommunicationMode.java

* Update SMSCommunicationMode.java

* Update MessageLogger.java

* Update MessageSentLoggable.java

* Update AOPModule.java

* Update BasicModule.java

* Update CommunicationModel.java

* Update Communicator.java

* Update BasicModule.java

* Update RunGuice.java

* Update MessageLogger.java

* Update Communicator.java

* Update pom.xml

* BAEL-278: Updated README.md

* BAEL-554: Add and update README.md files

* Update pom.xml

* Update pom.xml

* Update pom.xml

* BAEL-345: fixed assertion

* BAEL-109: Updated README.md

* BAEL-345: Added README.md

* Reinstating reactor-core module in root-level pom

* BAEL-393: Adding guide-intro module to root pom

* BAEL-9: Updated README.md

* BAEL-157: README.md updated

* Changed project name

* Update RunGuice.java

Removed references to message logging and output

* Update Communication.java

Removed message logging-related code

* BAEL-566: Updated README.md

* New project name

* BAEL-393: removing guice-intro directory

* BAEL-393: renamed module guice-intro to guice in root pom.xml

* BAEL-393 and BAEL-541 README.md files

* BAEL-731: Updated README.md

* BAEL-680: renamed test methods

* BAEL-714: Updated README.md

* BAEL-737: Updated README.md

spring-jpa/README.md

@@ -13,6 +13,7 @@
 - [Hibernate Second-Level Cache](http://www.baeldung.com/hibernate-second-level-cache)
 - [Spring, Hibernate and a JNDI Datasource](http://www.baeldung.com/spring-persistence-jpa-jndi-datasource)
 - [Deleting Objects with Hibernate](http://www.baeldung.com/delete-with-hibernate)
+- [Self-Contained Testing Using an In-Memory Database](http://www.baeldung.com/spring-jpa-test-in-memory-database)
 
 ### Eclipse Config 
 After importing the project into Eclipse, you may see the following error: