Updates to Burner 2.1.4.
Updates /public versions to latest.
Adds multiple worlds example to README.
Updates link to dom_world example.
Updates class heirarchy; updates agent behaviors.
Adds sensor range sensitivity display.
Added sensor.displayRange and displayConnector options.
Adds Dragger class.
Adds new examples; removes unnecesary examples.
Updates public files.
Adds onConsume property for CONSUME behavior.
Updates public files; adds multi agent sim.
Updates Walker properties; moves avoidEdges function to Mover.
Adds more examples.
Updates examples.
Minor updates to examples.
Builds 2.2.1
Merge pull request #1 from foldi/ver3

Ver3
Untracks docs.
Removes doc folder.