fix: add get version for deluge v2

Author: scttcper

Diff for: README.md

@@ -73,3 +73,5 @@ console.log(res);
 ### See Also
 transmission - https://github.com/TypeCtrl/transmission  
 qbittorrent - https://github.com/TypeCtrl/qbittorrent  
+utorrent - https://github.com/TypeCtrl/utorrent  
+rtorrent - https://github.com/TypeCtrl/rtorrent  

Diff for: src/index.ts

@@ -174,6 +174,14 @@ export class Deluge implements TorrentClient {
     return res.body.result;
   }
 
+  /**
+   * returns the version ex - `2.0.3-2-201906121747-ubuntu18.04.1`
+   */
+  async getVersion() {
+    const req = await this.request<StringStatus>('daemon.get_version');
+    return req.body;
+  }
+
   /**
    * used to get torrent info before adding
    * @param tmpPath use path returned from upload torrent looks like `'/tmp/delugeweb-DfEsgR/tmpD3rujY.torrent'`
@@ -185,10 +193,11 @@ export class Deluge implements TorrentClient {
 
   /**
    * Lists methods
+   * @param auth disable or enable auth connection
    * @returns a list of method names
    */
-  async listMethods() {
-    const req = await this.request<ListMethods>('system.listMethods', undefined, false);
+  async listMethods(auth = true) {
+    const req = await this.request<ListMethods>('system.listMethods', undefined, auth);
     return req.body;
   }