$ sudo yum install zbar-devel.x86_64
$ pip install Pillow
$ pip install zbarlight
$ pip install flask
$ pip install tornado
$ python server.py
$ curl -XGET 'http://localhost'
$ curl -XPOST 'http://localhost/decode' -d '{"url": "https://goo.gl/vEbsWD.qr"}'
{
"codes": [
"github.com/hyeonjae/qrcode-decode-server"
]
}