Fix CMakeLists.txt for compilation on windows

missing libraries for target hello_world_async_server_with_work_queue is
now added.
also fixes the formatting error with using tabs instead of spaces, according to
the style guide (fix in hello_world_async_server_with_work_queue.cpp)
Merge pull request #345 from codemedic/0.11-devel

Fix CMakeLists.txt for compilation on windows