It should be a complete working program with complete source!!
I think its perfect as it is - it just exports the bits you need - why have a complete bit of code when you are going to have to cut & paste the bits you want into your own code anyway ? You can see the effect directly in the editor. I would definetely recommend the EPS particle system if speed is not a great issue but ease of use is.
For pure speed though a single-surface system like Particle Candy is better. Probably buy it when an Editor appears. I can't be arsed working out all the parameters manually.