Relocate Source to proper directory.

src/main/java/appeng/helpers/AEGlassMaterial.java

@@ -0,0 +1,20 @@
+package appeng.helpers;
+
+import net.minecraft.block.material.MapColor;
+import net.minecraft.block.material.Material;
+
+public class AEGlassMaterial extends Material
+{
+
+	public AEGlassMaterial(MapColor p_i2116_1_) {
+		super( p_i2116_1_ );
+	}
+
+	public boolean isOpaque()
+	{
+		return false;
+	}
+
+	public static AEGlassMaterial instance = (new AEGlassMaterial( MapColor.airColor ));
+
+}