F# Library project templates and portable library templates do not have AutoGenerateBindingRedirects set to true #312

While fixing #283 I noticed that F# Library project templates and portable library templates do not have AutoGenerateBindingRedirects set

Using the Solution explorer it is possible to add an App.config to file to an F# library and portable library project. The app config could be used by a number of test frameworks.

We should set this value by default in the template to ensure that the app config contains the correct binding information.