Merge pull request #2 from oma-vrptw/origin/master

evolve function completed.
initial populazione powered, any more random :) by Alessio
correction and detection of duplicateChild
Merge branch 'master' of https://github.com/oma-vrptw/oma-vrptw.git
merged
fixed bug OutOfRange in generateNewPopulation due to percentageChoose >
children.length
now: percentageChoose = Math.min((populationDim/10)*2, children.length);