quadtree bugfix
updated readme
added flag for solving constraints automatically in World
using local jquery
equation updates
docs
fixed spring force bug
reusing the result array in Broadphase
minor springs example update
Using array.push.apply(array,otherArray) for faster append. Added Utils.
minor loop fixes
minor loop optimization for SAP
using Utils.appendArray in Nearphase
nearphase optimizations
decreased number of iterations in circles example
reusing array in Solver.prototype.removeAllEquations
optimizing equations
update readme
removed unused .motorVelocity property from PointToPointConstraint
docs