Initial pass at the Commerce iATS USB card reader blog post.
Added information on the API services available to USB card readers.
Added images for Commerce iATS card reader blog post.
Added API service links to USB card reader blog post.
Added screenshots to USB card reader blog post.
Formatting fixes and text changes to USB card reader blog post.
Grammar fix in USB card reader blog post.
Reduced iATS USB card reader images to a more reasonable size.
Client name change.
Minor edits and rename.
Merge pull request #129 from thinkshout/master

Editing client name and Dan's blog.