demo only shows black spheres

[XxgithubxX]

I downloaded "threex.planets" and opened the "earth.html" file under the directory "examples" and the only thing that displays is two black spheres and a blue color ring around what would be earth. I'm not sure if there is a dependency I'm missing or what? I can run the same exact demo from the following link:
http://jeromeetienne.github.io/threex.planets/examples/earth.html
but I can not run it locally after downloading "threex.planets". I should also note that I did not change anything...I simply opened the "earth.html" file under the directory "examples".

[XxgithubxX]

Being new to three.js, I was unaware of this issue:
"need a local server to run texture loading examples locally"
https://github.com/mrdoob/three.js/wiki/How-to-run-things-locally
I setup a local Apache server and everything works fine!