makes random grid of 1's and 0's in js
//makes grid of 1's and 0's
function binarygrid(size){
var grid = [];
for(var i = 0;i<size;i++){
var row = [];
for(var j=0;j<size;j++){
row.push(Math.floor(Math.random()*2));
}
grid.push(row);
}
return grid;
}