INTSAMPLES-54 - Update README.md

* Update README.md to reflect correct classes
* Add documentation for Delayer application
* Add JavaDoc for delayer application
* Delete redundant *src/main/resources/log4j.properties*
* Add logger name to *Logging Channel Adapter* configuration
* Add Maven Exec Maven Plugin for easy execution from the command line

basic/helloworld/README.md

@@ -1,8 +1,37 @@
 Hello World Sample
 ==================
 
-This is an obvious place to get started. It demonstrates a simple message flow represented by the diagram below:
+This is an obvious place to get started. This sample project contains 2 basic sample applications:
 
-	Message -> Channel -> ServiceActivator -> QueueChannel 
+* Hello World
+* Delayer Application
+
+## Hello World
+
+The Hello World application demonstrates a simple message flow represented by the diagram below:
+
+    Message -> Channel -> ServiceActivator -> QueueChannel 
+
+To run the sample simply execute **HelloWorldApp** in package **org.springframework.integration.samples.helloworld**. You can also execute that class using the [Exec Maven Plugin](http://mojo.codehaus.org/exec-maven-plugin/):
+
+    $ mvn clean package exec:java -P hello
+
+You should see the following output:
+
+    INFO : org.springframework.integration.samples.helloworld.HelloWorldApp - ==> HelloWorldDemo: Hello World
+
+## Delayer Application
+
+This simple application will print out the current system time twice every 20 seconds.
+
+More specifically, an **Inbound Channel Adapter** polls for the current system time 2 times every 20 seconds (20000 milliseconds). The resulting message contains as payload the time in milliseconds and the message is sent to a **Logging Channel Adapter**, which will print the time to the command prompt.
+
+To run the sample simply execute **DelayerApp** in package **org.springframework.integration.samples.helloworld**. You can also execute that class using the [Exec Maven Plugin](http://mojo.codehaus.org/exec-maven-plugin/):
+
+    $ mvn clean package exec:java -P delayer
+
+You should see output like the following:
+
+    INFO : org.springframework.integration.samples.helloworld - 1328892135471
+    INFO : org.springframework.integration.samples.helloworld - 1328892135524
 
-To run sample simply execute a test case in the **org.springframework.integration.samples.helloworld** package.