Cryolite/cradle — pull request #15 by Cryolite (2013-06-09 05:03:15+00:00)
Title: Added `cradle::enable_if_reference`.

* cradle/type_traits/enable_if_reference.hpp: New. Added
`cradle::enable_if_reference` and `cradle::disable_if_reference`.
* test/unit/type_traits/enable_if_reference_run.cpp: New. Added unit tests
for `cradle::enable_if_reference` and `cradle::disable_if_reference`.