Revisions

- Very good attempt at Hangman Mark and Nix; 
- I have refactored the code to use a hangman calculator object to avoid using the nasty global functions; 
- Remember to cache elements that you are using multiple times throughout the application, I have changes a few of these, but you need to change  the rest; 
- Try and complete the rest of the functionality tonight, let the user know when they have won, and show the number of guesses they have left;