Merge pull request #1 from CIS565-Fall-2013/texturefix

Fix incomplete texture and Strange globe in chrome
Update README.md
Update README.md

Improved links to live demos
Merge remote-tracking branch 'remotes/starter/master'
Added night lights and twilight border.
Added specular map into consideration.
Implemented moving clouds
Implemented bump mapping.
Implemented rim lighting, but there are artifacts.
Added rim lighting.
Flat shaded clouds.