code: function omit(keys, object){
    var ret = {};
  
    for (var item in object) {
      ret[item] = object[item];
    }
  
    for (var i = 0; i < keys.length; i++) {
      delete ret[keys[i]];
    }
    return ret;
  }
docs: Return a copy of the object without the specified keys.
  
  @param {Array} keys
  @param {Object} object
  @return {Object}