Initial commit of Heater.java and Heater.Test with no stubs in Heater.java
Heater.java and HeaterTest.java set up
Fix stub methods in Heater.java
Add demo main method to show how to construct a heater and the toString method
Added javadoc to Heater.java
Fixed javadoc by making all methods public
Merge pull request #1 from nguyenmp/master

Added Heater class under nguyenmp directory