docs: function set(key, value) {
    var k = this.getKey(key);
    var name = this.getName(key);
    if(this.conf.native && typeof(value) == 'string') {
      try {
        value = native.to(
          value, this.conf.native.delimiter, this.conf.native.json);
      }catch(e){}
    }
    this[name] = process.env[k] = value;
  }