parse_processors shouldn't modify original processor_definition.
Update README.rst
Renamed ThumbnailManager.delete_thumbnail -> ThumbnailManager.delete .
Renamed ThumbnailManager.create_thumbnail -> ThumbnailManager.create .
Renamed ThumbnailManager.get_thumbnail -> ThumbnailManager.get .
Seek to 0 on file before resizing source
Merge pull request #60 from SeiryuZ/fix-IOError

Seek to 0 on file before resizing source
Minor doc text fixes.
Fixed typo in ImageField's super call.