Moved source files to root directory.

tests/test_cache.py

@@ -4,7 +4,7 @@ from shutil import rmtree
 from copy import copy
 from cPickle import dumps
 
-from src.cache import ADMINISTRATION_FILE, assert_file_exists, to_dir, Cache
+from cache import ADMINISTRATION_FILE, assert_file_exists, to_dir, Cache
 
 
 class TestCache(unittest.TestCase):