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
Merge pull request #33 from da2ce7/cmake_inc_headers

add headers to cmake
Use standardized copyright headers
Use standardized multiple inclusion guards
Minimize header dependencies
Removed old OTMeChai.hpp
Minimize source dependencies
Cleaned up OTString.hpp