Merge pull request #99 from jackykschou/BrandonSprint10

Brandon sprint10
added sound effects to boss, updated different survival area prefabs, added DisableGameObjectOnSurvivalSectionEned for health potion
Merge branch 'develop' into JackySprint10
Merge pull request #100 from jackykschou/JackySprint10

Jacky sprint10
Merge branch 'develop' into BrandonSprint10