Tidied up docstrings
Tidied up docstrings

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