Initial implementation of Should.CompleteIn(...)
Made TaskExtensions class internal.
Should specify the task scheduler here, otherwise TaskScheduler.Current may be used
Preserve StaceTrace.
Some small tweaks/cleanup for ShouldCompleteIn extension
Do not throw aggregate exception unless we have to
More tests
Removed unused using
Updated readme
Merge pull request #125 from JakeGinnivan/ShouldCompleteIn

Should complete in