Renamed ex02b and added image placeholder

examples/ex04a_textures.c

@@ -38,7 +38,8 @@ int main()
         
             ClearBackground(RAYWHITE);
             
-            DrawTexture(texture, screenWidth/2 - texture.width/2, screenHeight/2 - texture.height/2, WHITE);
+            DrawTexture(texture, screenWidth/2 - texture.width/2, 
+                        screenHeight/2 - texture.height/2, WHITE);
             
             DrawText("this IS a texture!", 360, 370, 10, 1, GRAY);
         
@@ -48,7 +49,7 @@ int main()
 
     // De-Initialization
     //---------------------------------------------------------
-    UnloadTexture(texture);        // Texture unloading
+    UnloadTexture(texture);       // Texture unloading
     
     CloseWindow();                // Close window and OpenGL context
     //----------------------------------------------------------