Make cherrypy socket an environmental variable setting

[gregelin]

Socket that cherrypy runs on should be set by environmental value. The default is 127.0.0.1.

if __name__ == '__main__':
    conf = {
        '/': {
            'tools.sessions.on': True,
            'tools.staticdir.root': os.path.abspath(os.getcwd()),
            'tools.encode.on': True,
            'tools.encode.encoding': 'utf-8'
        },
        '/static': {
            'tools.staticdir.on': True,
            'tools.staticdir.dir': './public'
        },
        '/output': {
            'tools.staticdir.on': True,
            'tools.staticdir.dir': 'output'
        },
        '/assets': {
            'tools.staticdir.on': True,
            'tools.staticdir.dir': 'web/assets'
        }
    }
    # This next line should be set by config file or environmental variable.
    cherrypy.config.update({'server.socket_host': '104.131.136.182'})
    cherrypy.quickstart(StringGenerator(), '/', conf)