Updated examples files.js to include new canvas texture example.

examples/files.js

@@ -154,6 +154,7 @@ var files = {
 		"webgl_materials_texture_manualmipmap",
 		"webgl_materials_texture_pvrtc",
 		"webgl_materials_texture_tga",
+		"webgl_materials_texture_canvas",
 		"webgl_materials_transparency",
 		"webgl_materials_variations_basic",
 		"webgl_materials_variations_lambert",