Correct .Net version?

[jhocking]

Is the readme correct about Windows when it says: Requires .NET 2.0 api compatibility level

I've been using this file browser for a while in a mac tool (works great btw) and just tried to build it on Windows. I had an error until switching to 4.x

[rubenwe]

@jhocking Maybe what I did for #76 might help. Cheers!

[jhocking]

Possibly I didn't do it quite right (just grabbed the three DLLs in your commit, and dropped them into the installed package) but that didn't work. It did build fine with .NET 2.0 but the file picker didn't actually appear in the built app.