Simple Extract method refator 

Just a simple extract method refactor for contact information , into save_new_contact method.
Also replacing temp with query.  
Replaced explicit ContactInformation.new with self.new as it sounds more reasonable in a class method because what if ContacInformation class name is changed, this leads to one less place for search and replace.

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. 

The Gemfile 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 in your system, though ideally it should not as unix styled file endings are much better than CR/LF pairs in dos encoded files.