Merge pull request #5104 from bardt/patch-1

Add options parameter to form-data append method

form-data/form-data.d.ts

@@ -7,7 +7,7 @@
 
 declare module "form-data" {
 	export class FormData {
-		append(key: string, value: any): FormData;
+		append(key: string, value: any, options?: any): FormData;
 		getHeaders(): Object;
 		// TODO expand pipe
 		pipe(to: any): any;