README.rdoc in timeliness-0.4.1 vs README.rdoc in timeliness-0.4.2

@@ -234,11 +234,11 @@
 == Settings
 
 === US/Euro Formats
 
 The perennial problem for non-US developers or applications not primarily for the US, is the US date
-format of m/d/yy. This is ambiguous with the European format of d/m/yy. By default the gem uses the
+format of m/d/yy. This is can be ambiguous with the European format of d/m/yy. By default the gem uses the
 US formats as this is the Ruby default
 when it does date interpretation.
 
 To switch to using the European (or Rest of The World) formats use this setting
 
@@ -247,9 +247,16 @@
 Now '01/02/2000' will be parsed as 1st February 2000, instead of 2nd January 2000.
 
 You can switch back to US formats with
 
   Timeliness.use_us_formats
+
+==== Thread Safety
+
+The switching of formats is threadsafe (since v0.4.0), however for each new thread the format default will be 
+the gem default, being the US format. To control default for your app and each new thread, use the config
+
+  Timeliness.ambiguous_date_format = :euro
 
 
 === Customising Formats
 
 Sometimes you may not want certain formats to be valid. You can remove formats for each type and the