Multi-OS support

[tbernau]

We currently can not guarantee functionalities for multiple OS (or possibly even OS configurations).
We have to assume that Gradle works on different OS's (was tested on Windows 7, Ubuntu and MAC OS X and works fine), yet some implementations may cause errors platformdependent (see #35) and this can currently not be discovered automatically.

[rlaemmel]

I believe that this is resolved (good enough), but assigning this to Michael (once I have his github id) so he has it on his radar.