Merge pull request #89 from ucwong/ucwong-patch-1

Update README.md

Author: ucwong

README.md

@@ -51,6 +51,10 @@ defer ldb.Close()
 peb := kv.Pebble("")
 defer peb.Close()
 
+...
+
+nut := kv.NutsDB("")
+defer nut.Close()
 ...
 ```
 ## Test