Fix typo in property definition
More optional debug log messages
Added documentation on Sparkle usage and some more minor improvements
Improve usage time tracking and make it more error resistant
Actually reset the usage time when saving it
Add missing links to sandbox ready sparkle fork to documentation
Add example code to the documentation for startUsage and stopUsage with appDelegate
Fix formatting errors in documentation
More documentation updates
Prepare 1.0.3 release with new version, build number and release notes
Merge git://github.com/bitstadium/HockeySDK-Mac