message: Add headers to request and response
diff: @@ -52,12 +52,14 @@ export interface IHost {
  export interface IRequest {
  url: string;
  + headers?: { [key: string]: any };
  }
  export interface IResponse {
  mimeType: string;
  status: number;
  value: any;
  + headers?: { [key: string]: any };
  }
  export interface IContainer extends EventEmitter {
  