test Retweet.cs
Merge branch 'master' into Retweet

Conflicts:
	Chicken/Chicken.csproj
	Chicken/Model/Retweet.cs
	Chicken/SampleData/user_timeline.json
	Chicken/Service/Implementation/TweetService.cs
	Chicken/View/StatusPage.xaml
	Chicken/ViewModel/Status/VM/StatusDetailViewModel.cs
	Chicken/ViewModel/ViewModelBase.cs
add Retweet.cs
merge branch