Sound and images playing and drawing in animation respectively.
Cleaned up canvas demo.
Made sound work on Firefox.
Created simple agent simulation, where agents are supposed to run away from the nearest other agent, proportionally to their distance.
test
Removed agent_system_simulation subfolder, see https://github.com/yin/html5-examples/tree/master/agent_system_simulation
Added README and other useful files.
Merge with Github repository