Move #content_split to Results class for use by both Media and Text. All tests still pass.
Add failing test for Media#sidebar_image_thumbnail.
Add method and passing tests for retriving thumbnails of images.
Add Media#sidebar_image_thumbnail that passes test.
Add failing tests for Page#sidebar_thumbnail.
Fix tests for Page#sidebar_thumbnail.
Add Page#find_sidebar_thumbnail, fixed Media#initialize, Media#sidebar_image_thumbnail.
Update README
Merge branch 'sidebarImageThumbnail' into working
Merge working with origin/working