Can't get GLSL shaders to work in Unity

I’ve been trying to port a few GLSL shaders to Unity for a while. Pretty sure the port was correct, but I was getting a black cube in unity. In order to test it out, I got some basic Unity GLSL shaders from a few sites, but alas, I’m still getting a black cube. Is there something special that I need to do in order to get GLSL shaders working on a new project?

https://bitbucket.org/ikriz/unity-shaders/src/1aa94147d53f/GLSL%20Shaders/Metablob.shader?at=default
http://ippomed.com/unity/howto-write-a-glsl-es-2-0-shader-for-unity-3d/

Are you on Windows?