Old leveldb isn't in the scaffold file anymore, I believe leveldb2 should be used

Directories-and-Files.md

@@ -8,7 +8,7 @@ First, run ```weed scaffold -config=filer``` to see an example ```filer.toml```
 
 The simplest filer.toml can be:
 ```
-[leveldb]
+[leveldb2]
 enabled = true
 dir = "."					# directory to store level db files
 ```