Merge pull request #1 from FreeOpcUa/master

update from original repo
Changes to be committed:
	modified:   src/protocol/binary_messages.cpp

Alternative for gettimeofday() that uses the c++11 chrono library.
This should make it easier to port to Windows platform, instead of crafting a workaround that implements a gettimeofday method.
gettimeofday() alternative that makes porting to windows easier
Merge pull request #27 from pspeybro/master

CurrentDataTime reimplemented with usung std::chrono for portability with windows.
Merge branch 'master' of github.com:FreeOpcUa/freeopcua