Add pre-release for 4.1.0

Author: JonRowe

README.md

@@ -22,6 +22,8 @@ Use **[`rspec-rails` 1.x][]** for Rails 2.x.
 
 ## Installation
 
+**IMPORTANT** This README / branch refers to the current development build.
+See the `4-0-maintenance` branch on Github if you want or require the latest stable release.
 
 1. Add `rspec-rails` to **both** the `:development` and `:test` groups
    of your app’s `Gemfile`:

lib/rspec/rails/version.rb

@@ -3,7 +3,7 @@ module Rails
     # Version information for RSpec Rails.
     module Version
       # Current version of RSpec Rails, in semantic versioning format.
-      STRING = '4.0.0'
+      STRING = '4.1.0.pre'
     end
   end
 end