Release 3.8.0.

Author: myronmarston

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 = '3.8.pre'
+      STRING = '3.8.0'
     end
   end
 end