Kill trailing whitespace in ruby files

db/migrate/20130305005138_add_bcrypt_fields_to_users.rb

@@ -1,7 +1,7 @@
 class AddBcryptFieldsToUsers < ActiveRecord::Migration
   def change
     execute "set statement_timeout = 0"
-    
+
     add_column :users, :bcrypt_password_hash, :text
   end
 end