add circular option
adapt circular to touch events
add circular option
Revert "add circular option"

This reverts commit 90f6024984567d8e1cc7038a1f0e5d08d9a184df.
setting the index page back to normal
cleaning up the code
fix the bug on resizing the viewport
Revert "fix the bug on resizing the viewport"

This reverts commit 9c04cecce5fecafee846eb90084cbb0efd0b5ba7.
fix the bug on resizing the viewport
merged continuous and circular. made a special case for only two slides where we duplicate slides.
update readme and index
missed reference to circular
we don't want to duplicate in browsers that don't offer transitions
fix continuous for no-transitions browsers
Merge pull request #246 from alicelieutier/master

added an option "circular"