Some clean up, web version prepare

src/SparkEmitter.h

@@ -6,7 +6,7 @@
 #include <chrono>
 #include <string>
 
-namespace ZL {
+namespace FRG {
 
 	struct SparkParticle {
 		Vector3f position;
@@ -126,4 +126,4 @@ namespace ZL {
 		Vector3f getRandomVelocity(int emitterIndex);
 	};
 
-} // namespace ZL
+} // namespace FRG