CCBPublisher test now testing configCocos2d and more resolutions.
CCBPublisher test: Added image scaling tests for different resolutions.
Some renaming improvement of assertion helper.
FileSystemTestCase+Images category will XCTFail now if there was an error creating a file or a file does not exist.
FileSystemTestCase will create intermediate directories for the createFile methods.
Reducing code and less error prone tests, no need to double check to create a folder first before a nested file.
CCBPublisher test added for different scaling factors of an image.