CMake 3.0.1 testing

Hi,

I've added cmake 3.0.1 version to travis-ci config. Seems that some test [fails][1] with message:
```
CMake Error at cmake/core/message.cmake:142 (_message):

'assertion failed1: '1.0.0-+;STREQUAL;1.0.0''
```

[1]: https://travis-ci.org/ruslo/oo-cmake/jobs/34641032