Rem converter for Less CSS
It's a small hack that adds a function to convert px into rem.
Find inside less.js or functions.js:
convert: function (val, unit) {
    return val.convertTo(unit.value);
},
and right after add:
rem: function (val, base) {
    var remSize = Math.round((val.value/base.value)*10000)/10000;
    return new(tree.Dimension)(remSize, 'rem');
},
And now you can convert px to rem. The following Less:
@remBaseSize: 14px;
.class{
    font-size: rem(16px, @remBaseSize);
}
Compiles to:
.class{
    font-size: 1.1429rem;
}


