Asset Pack Update

- Assembled demo scene 1 & 2.

- Cleaned up folder structure.

- Tweaked & refined rock textures.

- Removed certain grass textures to be replaced by color tint function in shader.

- Ran a test package.

- Added gui elements to demo scene 2.

- Added camera movement to demo scenes.

- Used fraps to create flythrough.

- Established a publishers account with Unity