The application uses a configuration file that can be found at config/config.yml. Inside this configuration file there are two pairs key-value, as follows:
samples_service_url: http://rocboronat.net/barcelonabicing/bcnJ?all=1 token: "123"
The param samples_service_url indicates the URL for data retrieval. The param token is a security paraphrase that can be used to securize access to the update data function.