Translated hangman.py and hangman2.py + small modifications

Summary:
- Translation of 2 scripts: "hangman.py"->"ahorcado.py" and "hangman2.py"->"ahorcado2.py"
- Accents were removed from words, and "ñ" was added to the dictionary (commented in "readme.md")
- Added my name and e-mail to "SPECIAL_THANKS_TO.txt"