Update serializers.js

[beatlevic]

This fixes the issue you run into when trying to use a TimeUUID for a column name on a columnFamily.insert(). The column name cannot be a TimeUUID object, but needs to be a String. (Object keys cannot be objects themselves.)

Example:

keyspace.get('columFamily', function(err, cf) {
    var timeUUID = TimeUUID.fromTimestamp(new Date());
    var column = {};
    column[timeUUID] = JSON.stringify({oy: 'yo'});

    cf.insert('key', column, function(err) {
      if (err) throw(err);
    });
 })

[devdazed]

Ah, I see now. I'm not used to using the object syntax for inserting rows, hence why i could never reproduce this problem myself. The other workaround was to generate an array of columns eg:

var row = [],
    column = new helenus.Column(timeUUID, val);
row.push(column);
cf.insert('key', row, callback);

I'll go ahead and merge this in, good catch!