Security updates: Update commander, mocha. npm audit fixes

Author: Sony Seng

README.md

@@ -107,8 +107,6 @@ $ json-caching-proxy --config config.json
 
 ## Programmatic Usage
 
-API docs can be found here: [JsonCachingProxy doc](http://sonyseng.github.io/json-caching-proxy/jsdoc/JsonCachingProxy.html)
-
 ```js
 const JsonCachingProxy = require('json-caching-proxy');
 

bin.js

@@ -20,6 +20,7 @@ function isDef (val) {
 }
 
 program
+	.storeOptionsAsProperties()
 	.version(version)
 	.option('-c, --config [path]', 'load a config file of options. Command line args will be overridden')
 	.option('-u, --url [url]', 'set target server (e.g. https://network:8080)')