docs: updated release section to use travis for continuous deployment
docs: updated release section to use travis for continuous deployment

nismod/smif,willu47/smif,tomalrussell/smif,willu47/smif,tomalrussell/smif,tomalrussell/smif,willu47/smif,tomalrussell/smif,willu47/smif,nismod/smif,nismod/smif,nismod/smif