Replaced some resources for better licensing

Some resources used in examples have not a clear license, so, I'm replacing some of them for clearly licensed versions or resources created by me under CC0. License file to be added.

examples/textures/textures_particles_blending.c

@@ -48,7 +48,7 @@ int main(void)
 
     float gravity = 3.0f;
 
-    Texture2D smoke = LoadTexture("resources/smoke.png");
+    Texture2D smoke = LoadTexture("resources/spark_flame.png");
 
     int blending = BLEND_ALPHA;
 
@@ -85,7 +85,7 @@ int main(void)
 
                 if (mouseTail[i].alpha <= 0.0f) mouseTail[i].active = false;
 
-                mouseTail[i].rotation += 5.0f;
+                mouseTail[i].rotation += 2.0f;
             }
         }
 

examples/textures/textures_sprite_explosion.c

@@ -11,8 +11,8 @@
 
 #include "raylib.h"
 
-#define NUM_FRAMES      8
+#define NUM_FRAMES_PER_LINE     5
-#define NUM_LINES       6
+#define NUM_LINES               5
 
 int main(void)
 {
@@ -32,7 +32,7 @@ int main(void)
     Texture2D explosion = LoadTexture("resources/explosion.png");
     
     // Init variables for animation
-    int frameWidth = explosion.width/NUM_FRAMES;    // Sprite one frame rectangle width
+    int frameWidth = explosion.width/NUM_FRAMES_PER_LINE;    // Sprite one frame rectangle width
     int frameHeight = explosion.height/NUM_LINES;   // Sprite one frame rectangle height
     int currentFrame = 0;
     int currentLine = 0;
@@ -73,7 +73,7 @@ int main(void)
             {
                 currentFrame++;
 
-                if (currentFrame >= NUM_FRAMES)
+                if (currentFrame >= NUM_FRAMES_PER_LINE)
                 {
                     currentFrame = 0;
                     currentLine++;