Resolves issue herenow#2 adding --allow option to wsProxy

An adhoc solution was added, I've added an `--allow` option, which
accepts a list of comma separated IP:HOST to wsProxy, it will overwrite
the global allowed.js exported object.

Author: herenow

README.md

@@ -18,7 +18,20 @@ Usage
 ```
 wsproxy [-p PORT] [-t THREADS (# of threads to spawn)] [-s ENABLE_SSL] [-k KEY_FILE] [-c CERT_FILE]
 ```
-* If no `port` is specified it will default to process.env.PORT or port 5999.
+* `-p` Port to bind wsProxy to
+	* If no `port` is specified it will default to `process.env.PORT` or port 5999.
+* `-a` List of allowed servers to proxy to
+	* By default wsProxy will proxy to any ip:port, this is a major risk, since malicous users may use your
+	wsProxy server for illegal activity, or any other use other then connecting to your athena server.
+	* The list of IP:PORT's should be separate by comma! Ex:
+	```bash
+	wsproxy -a 127.0.0.1:6900,127.0.0.1:6121,127.0.0.1:5121
+	```
+	* Note: Use the same IP's you configured your server address at ROConfig at roBrowser.
+* `-t` Number of cpu cores that wsProxy should use
+* `-s` Enable SSL
+	* `-k` Path to ssl key file
+	* `-c` Path to ssl cert file
 * Use `wsproxy --help` for a list of available commands.
 
 
@@ -29,6 +42,7 @@ When connecting to this websocket you will give it an IP:PORT uri, for example:
 ws://websocket.example.com:5999/127.0.0.1:6900
 ```
 * You can edit allowed.js to only allow proxy to certain IP:PORT
+	* Note: if you pass in the `-a` or `--allow` option when starting the `wsproxy` this file will be ignored.
 * We will soon release a version, with better standards for this.
 
 

index.js

@@ -4,13 +4,15 @@
 var args    = require('optimist').argv;
 var main    = require('./src/main');
 var modules = require('./src/modules');
+var allowed = require('./allowed');
 
 
 // Arguments
 if(args.h || args.help) {
 	console.log('Example usage:');
 	console.log('wsproxy -p 5999');
 	console.log('-p, --port port to run wsProxy on. [Default: 5999]');
+	console.log('-a, --allow list of allowed ip:port to proxy to (comma separated) [Default: none] [Example: 127.0.0.1:6900,127.0.0.1:5121,127.0.0.1:6121]');
 	console.log('-t, --threads number of \"threads\" to spawn, set it to the number of cpu\'s you have. [Default: 1]');
 	console.log('-s, --ssl enable ssl.');
 	console.log('-k, --key path to ssl key file. [Default: ./default.key]');
@@ -20,7 +22,15 @@ if(args.h || args.help) {
 
 
 // Load modules
-modules.load('allow')
+modules.load('allow');
+
+
+// Parse allowed ip:port option into array
+// Overrides the default allowed.js file
+// TODO: remove this allowed.js file, and write a standard way to handle this allowed_ip option.
+if(args.a || args.allow) {
+	allowed = (args.a || args.allow).split(',');
+}
 
 
 // Init