Adding assets and readme update

Author: ichko

README.md

@@ -64,8 +64,8 @@ return 0;
 ### Mandlbulb 17th power
 ![sdl example](assets/example_ray_marching_mandelbulb_17th_power.png)
 
-### Reflection with texturing
-![reflection example](assets/example_anti_reflection_and_texturing.png)
+### Reflection with texturing and shadows
+![reflection example](assets/example_shadows_and_reflection.png)
 
 ### Reflection
 ![reflection example](assets/sdl_example_reflection.png)

assets/example_shadows_and_reflection.png

@@ -11,8 +11,8 @@ void first_test();
 void second_test();
 
 int main(int argc, char** argv) {
-    first_test();
-    // second_test();
+    // first_test();
+    second_test();
 
     return 0;
 }