README.md in loquor-0.7.0 vs README.md in loquor-0.8.0

@@ -24,9 +24,11 @@
 ``` ruby
 Loquor.config do |config|
   config.access_id  = "Username"
   config.secret_key = "SecretKey1929292"
   config.endpoint   = "http://www.meducation.net"
+  config.substitute_values[true]  = ":__true__"
+  config.substitute_values[false] = ":__false__"
 end
 ```
 
 If you're not using this for Meducation, then edit the [mappings here](https://github.com/meducation/loquor/blob/master/lib/loquor.rb#L16).