Set Host header based on actual input

Fixes #1

lib/cors-anywhere.js

@@ -182,6 +182,9 @@ var getHandler = exports.getHandler = function(options) {
         delete req.headers[header];
       });
 
+      // Only add port if it was explicitly set
+      req.headers.host = host + (match[4] ? ':' + port : '');
+
       proxyRequest(req, res, proxy, full_url, {
         host: hostname,
         port: port
@@ -197,7 +200,6 @@ var createServer = exports.createServer = function(options) {
 
   // Default options:
   var httpProxyOptions = {
-    changeOrigin: true,         // Change Host request header to match the requested URL instead of the proxy's URL.
     xforward: {
       enable: true            // Append X-Forwarded-* headers
     }

package.json

@@ -1,6 +1,6 @@
 {
   "name": "cors-anywhere",
-  "version": "0.1.1",
+  "version": "0.1.2",
   "description": "CORS Anywhere is a reverse proxy which adds CORS headers to the proxied request. Request URL is taken from the path", 
   "license": "MIT",
   "author": "Rob W <gwnRob@gmail.com>",