Fixed ic_launcher conflict

When I try to build my project with Caldroid as maven dependency I get the following error messages

![caldroid](https://cloud.githubusercontent.com/assets/3179252/4339078/a996aef8-401f-11e4-9f14-9ce75f1350fe.png)

I just googled and found this

- http://stackoverflow.com/questions/24140030/resource-entry-ic-launcher-already-defined/
- https://github.com/daimajia/AndroidImageSlider/issues/8

It seems the problem solved by removing __ic_launcher__