Add default fallback locale (if autodetection fails)

README.md

@@ -1,8 +1,8 @@
 # Locale Detector
 
-This Rails gem makes use of the HTTP_ACCEPT_LANGUAGE http header send by the browser with every request, to set the I18n.locale.
-
-If there is no such header it will fall back to the default header.
+This Rails gem makes use of the HTTP_ACCEPT_LANGUAGE http header send by web browsers with every request, to set the `I18n.locale` variable.
+When this fails (for example if there is no such http header as is the case for Google bot), it will try to determine the locale based on the toplevel domain suffix (so it will set 'de' for the `example.de` domain).
+When both fail, it will fall back to the `LocaleDetector.fallback_locale`, which is 'en' by default and can be overriden in `config/initializers/locale_detector.rb`.
 
 
 ## Installation
@@ -26,4 +26,12 @@ $ bundle
 ```
 
 
+You can optionally overwrite the default fallback locale by creating a `config/initializers/locale_detector.rb` file and set the `fallback_locale` to a new string, for example:
+
+```ruby
+LocaleDetector.fallback_locale = 'pl'
+```
+
+
+
 Copyright © 2011 Exvo.com Development BV, released under the MIT license

lib/locale_detector.rb

@@ -1,3 +1,4 @@
+require "locale_detector/fallback_locale"
 require "locale_detector/filter"
 require "locale_detector/version"
 

lib/locale_detector/fallback_locale.rb

@@ -0,0 +1,5 @@
+module LocaleDetector
+  @@fallback_locale = 'en'
+
+  mattr_accessor :fallback_locale
+end