Updated readme.md
* Update pom.xml
Corrected main class and added JUnit dependency
* Update README.md
* Update README.md
### Relevant Articles:
- [Introduction to Spring Integration](http://www.baeldung.com/spring-integration)
+
+### Running the Sample
+Executing the `mvn exec:java` maven command (either from the command line or from an IDE) will start up the application. Follow the command prompt for further instructions.
