README.md in tork-19.5.1

- old
+ new

@@ -170,9 +170,13 @@
 
 > SQLite3::BusyException: database is locked
 
 > cannot start a transaction within a transaction
 
+For older Rails, to use SQLite3 as your test database along with browser-based
+acceptance testing frameworks such as Capybara, see
+http://www.spacevatican.org/2012/8/18/threading-the-rat/
+
 ## Configuration
 
 Tork looks for a configuration directory named `.tork/` inside its working
 directory.  The configuration directory contains specially-named Ruby scripts,
 within which you can query and modify the settings for various tork programs.