Add key navigator class to enable key navigation of the scrollList
Add a spec for KeyNavigator
Fix inconsistent spacing in KeyNavigator
Add KeyNavigator instantiation to the scrollList demo
Remove Key Navigator instantiation from ScrollList
Adjust for peek and single mode in KeyNavigator
Update KeyNavigatorSpec to expect use of ScrollTo instead of ScrollToPosition in some expects
Add test coverage for peek/single mode
Update moveX method and add test coverage
Merge pull request #33 from WebFilings/BOOKS-3672_add_key_navigation

Add key navigation