Add main function driver.

main.py

@@ -0,0 +1,13 @@
+#!/usr/bin/env python
+
+from TreeWalker import TreeWalker
+from sys import argv
+
+def main():
+	if len(argv) != 3:
+		print "usage: %s ALBUM_PATH CACHE_PATH" % argv[0]
+		return
+	TreeWalker(argv[1], argv[2])
+	
+if __name__ == "__main__":
+	main()

test.py

@@ -1,5 +0,0 @@
-#!/usr/bin/env python
-
-from TreeWalker import TreeWalker
-
-walker = TreeWalker("./test", "./cache")