Update CMake scripts.
Removed unnecessary files.
Fixed Lunchbox deprecation warnings.
CR #97 cleanups
Recovered non autogenerable parts of former co.h.
Repaced lunchbox::sleep with boost::this_thread::sleep.
Updated Collage.cmake.
Adding Boost.Thread to Travis config.
Compilation fix for Travis.
Bump .gitexternals.
Merge pull request #97 from hernando/master

CMake updates, removed unnecessary files and fixed deprecation warnings