title: Store a global variable for all features in a SpecFlow test run
body: <p>I have been using FeatureContext for storing information about a specific feature that can be reused in all scenarios in that feature. However I have some things like login information that I don't want to recreate for every feature. I want to use the [BeforeTestRun] attribute to store this, but does SpecFlow have some sort of Global Context feature (like log4net) to store this information so it can be reused by all features?</p>