Need to add support for phrases

[spicydll]

Words get boring. Let's spice it up with phrases and sentences!

We need to do the following:

• refactor the "checkStringLettersOnly()" method to "checkPhrase()"
  • Make sure that the input string has at least one letter
  • Possibly move the method to the "Hangman" class
• refactor the "updateState()" method
  • Add support for characters other than letters
    • Add a space between each character
    • If the character is a letter, replace with an underscore
• General refactorings of "word" to "phrase"

I have already checked the HangmanDictionaryFileProcessor class and it seems it does not need any major refactorings, contrary to popular belief (A.K.A, Just me )

However, just about every class in the solution needs to change every occurrence of "Word" to "Phrase." Nothing a quick find and replace can't fix!