Finds all specs in a given directory. Returns a list of
        Example and ExampleGroup instances.

def find_specs(self, directory):
        """Finds all specs in a given directory. Returns a list of
        Example and ExampleGroup instances.
        """
        specs = []
        spec_files = self.file_finder.find(directory)
        for spec_file in spec_files:
            specs.extend(self.spec_finder.find(spec_file.module))
        return specs