fixes compiler error with Clang 5.0 on OSX Mavericks

- error message was:
```
In file included from /users/behrens/git/eudaq/./main/include/eudaq/Event.hh:11:
/users/behrens/git/eudaq/./main/include/eudaq/Serializer.hh:57:13: error: no viable overloaded '>>='
          t >>= 8;
```
Merge branch 'master' of https://github.com/eudaq/eudaq

Conflicts:
	main/include/eudaq/Serializer.hh
added first version of AIDA packet objects
Merge remote-tracking branch 'upstream/master' into aida_packet
serialize method for vector of bools added

not very well understood fix for this error message for MacOS Mavericks:

cd /Users/behrens/git/eudaq_aida_packet/main/lib && /usr/bin/c++
-DCPP11=1 -DEUDAQ_EXPORTS -DEUDAQ_FUNC=__func__
-DEUDAQ_PLATFORM=PF_MACOSX -std=c++11 -stdlib=libc++ -isysroot
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.9.sdk
-fPIC -I/Users/behrens/git/eudaq_aida_packet
-I/Users/behrens/git/eudaq/./main/include    -o
CMakeFiles/EUDAQ.dir/src/StringEvent.cc.o -c
/Users/behrens/git/eudaq/main/lib/src/StringEvent.cc
In file included from
/Users/behrens/git/eudaq/./main/include/eudaq/Event.hh:11:
/Users/behrens/git/eudaq/./main/include/eudaq/Serializer.hh:105:23:
error: no matching member function for call to 'GetFunc'
      WriteHelper<T>::GetFunc(static_cast<T*>(0))(*this, v);
      ~~~~~~~~~~~~~~~~^~~~~~~
/Users/behrens/git/eudaq/./main/include/eudaq/Serializer.hh:136:9: note:
in instantiation of function template specialization
'eudaq::Serializer::write<std::__1::__bit_const_reference<std::__1::vector<bool,
std::__1::allocator<bool> > > >' requested here
        write(t[i]);
        ^
/Users/behrens/git/eudaq/./main/include/eudaq/Serializer.hh:136:9: note:
in instantiation of function template specialization
'eudaq::Serializer::write<bool>' requested here
        write(t[i]);
        ^
/Users/behrens/git/eudaq/main/lib/src/StandardEvent.cc:43:9: note: in
instantiation of function template specialization
'eudaq::Serializer::write<std::__1::vector<bool,
std::__1::allocator<bool> > >' requested here
    ser.write(m_pivot);
first version
first prototype to handle AidaPackets
first version
first prototype to handle AidaPackets
first release
first release
Merge remote-tracking branch 'upstream/master' into aida_packet
Merge remote-tracking branch 'upstream/master' into aida_packet
using AidaPacket
using AidaPacket and AidaFileWriter
Merge branch 'aida_packet' of https://github.com/druxx/eudaq into aida_packet
C++ JSON tool added
first version of smart enum class
first version
first beta?