* use ole32 when compiling with MINGW in Windows for UUIDs

* use winresrc.h instead of winres.h

* remove ole32 link dependency

* add mingw shell script

* add mingw support to travis-cli

* fix travis before_script

* add cmake cross compile support to cmake

* remove tobydox dependency

* use mingw from /usr instead of  /opt

* remove test from travis mingw build

* remove tets generation for linux mingw

* fix mingw cmake script

* add LIB3MF_TESTS at cmake toolchain

* reenable tests in mingw cmake

* Speed up OSX-builds

By not auto-updating brew

* Comment Travis CI-configuration

For linux, osx
Add build-status to README
Register tests for CTest