cppcheck: fix unnecessaryQualification
cppcheck: fix noCopyConstructor
cppcheck: remove operatorEq

This was a false positive caused by a undefined macro.
Merge pull request #36 from toxeus/cppFixapi

cppcheck: fix more warnings
Updates Windows document with missing information
about Cmake environment variables
Merge pull request #28 from BugFreeSoftware/windows_doc

Update Windows build document with missing information
add headers to cmake