tag 2.0.20 with sslmode in options

Author: tom zhou

package.json

@@ -2,7 +2,7 @@
   "author": "Tom Zhou <iwebpp@gmail.com>",
   "name": "forward-proxy",
   "description": "p2p http forward and socks proxy based on iWebPP.io and Node.js",
-  "version": "2.0.19",
+  "version": "2.0.20",
   "repository": {
     "type": "git",
     "url": "git://github.com/InstantWebP2P/node-forward-proxy.git"