Platform.cs -> Registry is not supported by mac

[serhatzor]

Hi , In Platform.cs static constructor , Registry class is used to find .net framework version if current runtime is not a mono runtime . In mac and in .net core application , this code throws exception when we want to create a beneficiary .

Could you add a code block to handle .net core runtime in this class .

[tluyben]

Here is a .NET Standard version https://github.com/tluyben/currencycloud-net

[jonathancouchman]

Thank you for your help and input. We will look at this change you have made.

[SilentBlueD666]

Take a look at my PR Support .NET Standard 2.0, should now support both.