Simple Extract method refator 

Just a simple extract method refactor for contact information , into save new contact also replacing temp with query.  also replaced explicit ContactInformation.new with self.new as it sounds more reasonable in a class method.

Also in gemfile got rid of mocha deprecation warning by requiring the appropriate file. also included minitest as it is a dependency to be loaded before mocha. Also the file encoding is changed to iso-latin-1 which was dos encoded earlier , and lead to ^M as the terminal character at the end of lines in git log. feel free to ignore it if it changes anything your system.