Add instructions for supervisord configuration and clean up README.md (cherry picked from commit f2b58c1af72e61adc8611b43a61cb7eedf9c83b4)
Add instructions for supervisord configuration and clean up README.md
(cherry picked from commit f2b58c1af72e61adc8611b43a61cb7eedf9c83b4)

lordappsec/ooni-probe,Karthikeyan-kkk/ooni-probe,Karthikeyan-kkk/ooni-probe,juga0/ooni-probe,0xPoly/ooni-probe,lordappsec/ooni-probe,kdmurray91/ooni-probe,kdmurray91/ooni-probe,0xPoly/ooni-probe,0xPoly/ooni-probe,0xPoly/ooni-probe,juga0/ooni-probe,kdmurray91/ooni-probe,Karthikeyan-kkk/ooni-probe,juga0/ooni-probe,kdmurray91/ooni-probe,lordappsec/ooni-probe,juga0/ooni-probe,lordappsec/ooni-probe,Karthikeyan-kkk/ooni-probe