Add shaders

Sources/Shaders/GlobalSnowForReflections.shader

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+Shader "GlobalSnow/SnowForReflections" {
+
+SubShader {
+	CGPROGRAM
+	#pragma surface surf BlinnPhong exclude_path:deferred exclude_path:prepass nometa
+	#pragma target 3.0
+	#pragma fragmentoption ARB_precision_hint_fastest
+	#pragma multi_compile __ GLOBALSNOW_FLAT_SHADING
+	#define GLOBALSNOW_ENABLE_SLOPE_CONTROL 1
+	#define GLOBALSNOW_IS_TERRAIN 1
+	#include "GlobalSnow.cginc"
+
+    void surf (Input IN, inout SurfaceOutput o) {
+		// Check alpha
+		fixed4 textureColor = tex2D(_MainTex, IN.uv_MainTex);
+		clip(textureColor.a + textureColor.g - 0.1);
+		SetSnowCoverage(IN, o);
+		o.Albedo = lerp(textureColor.rgb, o.Albedo, o.Alpha);
+    }
+    
+    ENDCG
+}
+
+
+Fallback Off
+}