README.md in traco-5.0.0 vs README.md in traco-5.1.0

@@ -1,10 +1,10 @@
 # Traco
 
-[![Build Status](https://secure.travis-ci.org/barsoom/traco.png)](http://travis-ci.org/barsoom/traco)
+[![Build Status](https://secure.travis-ci.org/barsoom/traco.svg)](http://travis-ci.org/barsoom/traco)
 
-Translatable attributes for Ruby on Rails, stored in the model table itself.
+Translatable attributes for Ruby on Rails 4.2+, stored in the model table itself.
 
 Inspired by Iain Hecker's [translatable_columns](https://github.com/iain/translatable_columns/).
 
 To store translations outside the model, see Sven Fuchs' [Globalize](https://github.com/globalize/globalize).
 
@@ -95,9 +95,11 @@
 You can specify e.g. `translates :title, fallback: false` to never fall back and instead return `nil`.
 
 You can specify e.g. `translates :title, fallback: :any` to fall back first to the default locale, then to any other locale.
 
 You can specify e.g. `translates :title, fallback: [:sv]` to explicitly declare fallbacks as an array of any length.
+
+You can specify e.g. `translates :title, fallback: :i18n` to use the fallbacks from `I18n.fallbacks`.
 
 You can override the default fallback strategy with a parameter passed to the reader: `post.title(fallback: :any)`.
 
 If you need to declare the default locale fallback, do `post.title(fallback: :default)`.