flag that controls the output format.
render the selected output format. use CPPTEST_OUTPUT flag.
added run tests for utils function.
added ofSystemUtils tests.
clean up tests.
added ofUtils tests.
added ofUtils DateTime test suite.
added tests.
utils will be tested by category.
added test for data/time and frames.
adde tests for paths.
added data/time test suite.
update xcode project.
update readme.