#263 - recommending Ruby install via Chocolatey and selling the Rake build.
Merge pull request #276 from blairconrad/263-update-how-to-build

#263 - recommending Ruby install via Chocolatey and selling the Rake build.
#268 - adding (failing) test
#268 - making DefaultBootstrapper.GetAssemblyFileNamesToScanForExtensions return an empty list
Merge pull request #278 from blairconrad/268-only-scan-the-current-appdomain-for-extensions

#268 only scan the current appdomain for extensions
ReturnsLazily of task #256
Improved test name
Made Returns of Task to leverage new ReturnsLazily of task
added Task overload of ReturnsNextFromSequence
Added support for Returning Task<T> to ReturnsLazily overloads that take parameters
Created Task helper with FromResult methods to removed taskcompletionsource duplication
Update tests to use fluent assertions
Added missing AssertThatValueProducerSignatureSatisfiesCallSignature to Task-based ReturnsLazily with 1 argument
Fixed incorrect comment about ReturnsNextFromSequence returns null when all values in sequence have been returned