changed random filenames to timestamped names. Added verbose option to command line args

added command line option to show the recursion depth

merge conflicts fixed

added recursion counter to __grow_seed

Merge pull request #4 from HarveyHunt/master

Made some changes to comply with PEP8, standardised naming and added a random string generator to create a filename if one isn't supplied.

Merge pull request #3 from pydanny/patch-1

renamed sample image

Switched Pil to the maintained Pillow.

formatting

added default values to help description

added more helpful help text

formatting

updated README to reflect new command line options

Fixes #1