s/0.6.5-SNAPSHOT/0.6.6-SNAPSHOT/ in readme

Not actually the PR I had in mind, but if it's deemed interesting i'd like to extract and polish code for:
- automatically [wiring components to libgdx widgets](https://dl.dropboxusercontent.com/u/1615755/shamans56.png), assisted by annotations for specifying ranges etc 
- [libgdx `@Profile` example](https://dl.dropboxusercontent.com/u/1615755/shamans43.png)