Adding back default particle texture, changing path in ParticleEmitter::create() to match.

gameplay/src/ParticleEmitter.cpp

@@ -55,7 +55,7 @@ ParticleEmitter* ParticleEmitter::create(const char* textureFile, TextureBlendin
     if (!texture)
     {
         // Use default texture.
-        texture = Texture::create("../gameplay-resources/res/textures/particle-default.png", true);
+        texture = Texture::create("../gameplay/res/textures/particle-default.png", true);
     }
     assert(texture);