Merge pull request #24 from Pekklectic/master

sound1button1
fixed enemies remaining bug?
Merge branch 'master' of https://github.com/mrome007/cs179ProjectVer1
gui changes
Merge pull request #26 from Pekklectic/master

guiguigui
Spawning Bug fix
Merge branch 'master' of https://github.com/mrome007/cs179ProjectVer1
hardcore mode, level for demo

just make a way for the menu to select through levels