Change library from var to umd

lib/zimbra-admin-api.js

-var ZimbraAdminApi =
-/******/ (function(modules) { // webpackBootstrap
+(function webpackUniversalModuleDefinition(root, factory) {
+	if(typeof exports === 'object' && typeof module === 'object')
+		module.exports = factory();
+	else if(typeof define === 'function' && define.amd)
+		define("ZimbraAdminApi", [], factory);
+	else if(typeof exports === 'object')
+		exports["ZimbraAdminApi"] = factory();
+	else
+		root["ZimbraAdminApi"] = factory();
+})(this, function() {
+return /******/ (function(modules) { // webpackBootstrap
 /******/ 	// The module cache
 /******/ 	var installedModules = {};
 /******/
@@ -38992,5 +39001,7 @@ var ZimbraAdminApi =
 	/* WEBPACK VAR INJECTION */}.call(exports, __webpack_require__(109).Buffer))
 
 /***/ }
-/******/ ]);
+/******/ ])
+});
+;
 //# sourceMappingURL=zimbra-admin-api.js.map
\ No newline at end of file

webpack.config.js

@@ -22,7 +22,7 @@ var config = {
     path: __dirname + '/lib',
     filename: outputFile,
     library: 'ZimbraAdminApi',
-    libraryTarget: 'var',
+    libraryTarget: 'umd',
     umdNamedDefine: true
   },
   module: {