Just Alpha Blending Shader

I wrote shader script, but it doesn’t work on the Player.

Why does Shader.Find (“Framework/Plain”) return null?

Shader "Framework/Plain" {
    SubShader {
		Tags {"Queue"="Transparent" "IgnoreProjector"="True" "RenderType"="Transparent"}
		LOD 100
	    Blend SrcAlpha OneMinusSrcAlpha // Alpha Blending
   		BindChannels 
		{
			Bind "Vertex", vertex
			Bind "Color", color
		}
        Pass {
	        Lighting Off
        }
    }
}

I did mistake!

Shader scripts are not in Resources folder!

Thanks.