README.md in lockbox-0.6.3 vs README.md in lockbox-0.6.4

- old
+ new

@@ -334,12 +334,10 @@
   user = User.find(params[:id])
   send_data user.license.download, type: user.license.content_type
 end
 ```
 
-#### Migrating Existing Files [experimental]
-
-**Note:** This feature is experimental. Please try it in a non-production environment and [share](https://github.com/ankane/lockbox/issues/44) how it goes.
+#### Migrating Existing Files
 
 Lockbox makes it easy to encrypt existing files without downtime.
 
 Add to your model:
 