Merge pull request #60 from tribal-tec/master

Add support for snapshot module
Fix doxygen rule dependencies
Merge branch 'master' of https://github.com/eile/CMake
Merge branch 'master' of https://github.com/Eyescale/CMake
Update README
Update README
Add option for deprecation warnings
Merge pull request #61 from eile/master

Fix doxygen rule dependencies
Keep upper/lower project name to not break PackageConfig