[TrainModel] Updated prototype for assignment
[TrainModel] Updated classes for prototype

Added block traversal code
resolved conflict for merge
[TrainModel] Updated classes for prototype
Update Environment.java

Remove duplicate code.
Update TrainContainer.java
Update TrainModel.java
Update Message.java
Update Worker.java
Update constData.java
Update Message.java
Merge pull request #4 from tnason/master

Package Updates