Added asynchronous versions of Execute() to the policies
Removed not needed namespaces
Compiling .NET 4.0 project
Fixed compilation for .NET 3.5
Updated to FluentAssertions.3.2.1
Updated to xunit.1.9.2
Add conditional compile constant to release build
Added async spects
Added more async specs
Moved async policy and syntax code to partial classes only used in .NET 4.5 project
Added a partial class with the async code of CircuitBreakerPolicy
Added a partial class with the async code of RetryPolicy
Removed NET45 compile constant from project file
Remove no longer needed dummy class
Fixed name of CircuitBreaker to CircuitBreakerAsync
Added .ConfigureAwait(false) to prevent deadlocks.
See http://stackoverflow.com/questions/13489065/best-practice-to-call-configureawait-for-all-server-side-code/13489639#13489639
Await async specs
Added guard clauses to prevent wrong usage
Merge pull request #13 from mauricedb/add-async-support

Add async support to Polly