The whole source codes & UIs of the project smile
created at NTU hackathon 2015
$ cd web
$ npm install
$ gulp build -d
$ ./ngrok http --subdomain=smile 3000
then open http://smile.ngrok.io/smile/chat?from=1&to=2
or http://smile.ngrok.io/smile/chat?from=2&to=1
Just run source code from android studio.