Revert "Temporarily set version for release of 3.5.0.beta3"

This reverts commit d707c93.

Author: Sam Phippen

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 = '3.5.0.beta3'
+      STRING = '3.5.0.pre'
     end
   end
 end