currently builds cycluscore from top-level directory
actually adds top level cmake file..
added cli to at the top of the directory structure
gtest library builds
enabled testing in new build environment. simplified test module directory structure and building.
a little cleaning before stubbing
moved stub directory to top level, made stubs a separate library, incorporated stub tests into cyclus unit tests
removed cyclus namespace from stubs
docs currently build
docs now in the top level directory, and a little clean up. fixes #602
made model test files install to share dir, fixes #559