Added documentation to the test file and updated README so users can …

…easily extend the test suite if so desired. Also renamed the test file from testCHENEY.c -> cheney.c and updated the Makefile and README links accordingly. Was also able to remove the library section in the Makefile and cleanup some test names as well as fixing a small description error about atomic data in the README.

Remove debug flag from build. Updated README and all code comments/do…

…cumentation