Merge pull request #1 from dwilkie/support_rails_4_2

Use sql to search for encrypted record instead

lib/crypt_keeper/provider/mysql_aes_new.rb

@@ -36,7 +36,7 @@ def decrypt(value)
       #
       # Returns an Enumerable
       def search(records, field, criteria)
-        records.select { |record| record[field] == criteria }
+        records.where("#{field} = ?", encrypt(criteria))
       end
     end
   end