Auto-synthesize properties.
Disable Sparkle update check.
Add an RWAddonAuthor plist entry.
Watch for changes to the fileToken property.
Include the fileToken in read/write calls.
Update framework builds.
Start/stop when accessing sandboxed URLs.

Allows the sample code to properly work across runs of the host app.
Guard against empty content strings.
Update HTML view setup.

The API changed so we need to use the new API to set up the view.
Update view hierarchy.

Due to changes in RWHTMLView, we need to change how we lay things out
in the XIB too.
Merge branch 'modern-styles'