ir_issues

I started writing some specs to point out IR bugs. Unfortunately I'm not really sure what the generated native code _should_ look like for these cases!

This PR is really meant more as a code/conversation starter for pointing out places where IR is failling down and breaking examples. See appcelerator/hyperloop-ios#49

But down here, this definitely isn't working as expected for me. It looks like we need to eval the "tapped:".trim() into a temporary variable and then pass that in as an arg to the NSSelectorFromString call and assign the result of that call to "selector". But again, I believe we take the whole thing and just try to eval it.