Small fix of docs in Line class.

Line receive tuple of two points. Not two separate points.
Add leading zeros to filenames in Image.save()

Add leading zeros to index suffix when saving
images in an ImageSet with Image.save(). This
should fix the sorting problem mentioned in #358
Merge pull request #414 from mfkaptan/imageset-save-order

Add leading zeros to filenames in Image.save(). I love simple solutions. Thanks!
Merge pull request #411 from polart/docFix

Small fix of docs in Line class.
fixed minor bug in total variation denoising
Merge pull request #415 from rajatkapoor/tvd_fix

fixed minor bug in total variation denoising
Merge branch 'develop' of github.com:ingenuitas/SimpleCV into develop
updated readme to reflect move