change rendering and some parameters to example simulations
breakout vector class into its own file
update quadtree npm version
remove predator example, move boid example to example folder and simplify rendering and control logic
add vector as file in lib folder
remove extraneous styles folder
remove old vector.js file
add browserify require statements for quadtree and vector, simplify logic
add small superficial styling changes
Merge branch 'master' of https://github.com/jrhdoty/SwarmJS
Merge branch 'master' into gh-pages