"Unable to load InMemorySinkAssertions" exception when using AwesomeAssertions

[rathole]

This is caused by the InMemorySinkAssertionExtensions.IsAwesomeAssertionsAvailableOnDisk looking for "FluentAssertions.dll" instead of "AwesomeAssertions.dll".

Can be worked around by ensuring the AwesomeAssertions.dll is already loaded before InMemorySinkAssertions.InMemorySink.Should is called for the first time.

[vfofanov]

I added a fix for this to #46

[rathole]

Thanks @vfofanov !