Snip naive RxJava brain damage in DemoApplication

```
[INFO] ------------------------------------------------------------------------
[INFO] Reactor Summary:
[INFO] 
[INFO] Mortar (Parent) ................................... SUCCESS [0.520s]
[INFO] Mortar ............................................ SUCCESS [9.447s]
[INFO] Hello Mortar ...................................... SUCCESS [9.831s]
[INFO] Mortar Sample ..................................... SUCCESS [19.277s]
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 40.539s
[INFO] Finished at: Fri Apr 04 17:51:27 PDT 2014
[INFO] Final Memory: 45M/736M
[INFO] ------------------------------------------------------------------------
```