message: Add PRoxyParams comments
diff: export type AccessKeyId = string;
  +// Parameters needed to access a Shadowsocks proxy.
  export interface ProxyParams {
  + // Hostname of the proxy
  hostname: string;
  + // Number of the port where the Shadowsocks service is running.
  portNumber: number;
  + // The Shadowsocks encryption method being used.
  encryptionMethod: string;
  + // The password for the encryption.
  password: string;
  }
  