First cut at schema for ItemList / ListItem, based on Martin Hepp's draft.
Adding numberOfElements property, as suggested by Alexander Shubin.
Adding example for ItemList from Alexander Shubin,
http://lists.w3.org/Archives/Public/public-vocabs/2014Jun/0122.html
Fixes to JSON-LD ItemList example.
An ItemList example was tagged to show in the ListItem page.
Merge branch 'master' into sdo-itemlist

Conflicts:
	app.yaml
Merge branch 'master' into sdo-itemlist
Merge branch 'master' into sdo-itemlist
Merge branch 'master' into sdo-itemlist
sdo-itemlist.appspot.com
Merge branch 'master' into sdo-itemlist
Merge branch 'master' into sdo-itemlist
Merge branch 'master' into sdo-itemlist
Moved sdo-itemlist examples to own file, conflict avoidance.
Moved ItemList proposal to separate file.
Moved itemListElement into separate file.
itemListElement extracted.
Fix for Issue: supercedes spelling: supersedes is more mainstream #101
Update the 'image' property description

We now describe that the image property has a range of both URL and
ImageObject, allowing for more flexible usage of the property.

Fixes #99.

Signed-off-by: Dan Scott <dan@coffeecode.net>
Add examples for exampleOfWork / workExample

Use a Tolkien example for Book editions and Movie instances
that illustrate how one can link works of different types
through the exampleOfWork / workExample properties.

Signed-off-by: Dan Scott <dan@coffeecode.net>