Main Menu Additions - Githubissues

[x] Speed-up credits on space (very easy, variable already in for speed)
[x] Escape to exit credits (Probably pretty easy)
[ ] Options has more options (optional)
[x] Start has a pop-up for the Save File name and/or Player Name (Same as the continue pop-up)
[x] On both continue and start, have any current save file that is available show up in the save slots (so that the player knows that there already exists some)
[x] Delete for each slot.
[x] Empty slots filled with some default info.
[x] Continue has a pop-up for looking at the current save files.
[ ] Update Menus from Canvas to GameObject

UVASGD / spring-2017-the-big-dungeon