log4j not properly initialized

[Rillke]

Following all instructions on https://conveyal-data-tools.readthedocs.io/en/latest/dev/deployment/ I get the following warnings:

log4j:WARN No appenders could be found for logger (org.apache.http.client.protocol.RequestAddCookies).
log4j:WARN Please initialize the log4j system properly.
log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for more info.

http://logging.apache.org/log4j/1.2/faq.html#noconfig basically tells me I should throw a log4j.properties or log4j.xml somewhere into the class path. It would be nice to have a section about that in the docs, though to allow me understand what the application does (which is kind of hard without any logs).