From progrium.com
The easiest way to share localhost web servers to the rest of the world
$ gem install localtunnel
$ localtunnel 8000
Then share this url: http://xyz.localtunnel.com
More specific directions
STEP 1:
Install localtunnel using RubyGems. (Check the full README if you don’t have Ruby or RubyGems.)
$ sudo gem install localtunnel
STEP 2:
Run your local web server on any port! Let’s say you’re running Apache on port 8080.
STEP 3:
Now run localtunnel passing it the port to share. The first time you run localtunnel you have to point to a public SSH key. Check the README if you need help.
Here’s an example; You should see something like this:
$ localtunnel -k ~/.ssh/id_rsa.pub 8080
Port 8080 is now publicly accessible from http://8bv2.localtunnel.com …
From progrium.com