You need to install jsbin's node_modules before you can run this.
From the root of the repo:
cd jsbin
../node-v0.10.27/npm install
Double click on start-jsbin.bat. The .bat file needs to be in the same directory as jsbin/ and node-v0.10.27/.
By default, the script will start JSBin on port 3000. Go to localhost:3000 (or <YOUR_IP_ADDRESS>:3000) to use it.