Fixes for MovieDatabase and WorldBank

This adds the second sample from my TechMesh talk (together with wrapper for experimental "apiary.io" type provider).

 * The `Highcharts.d.ts` file contains `new` "method" for some types, which needs to be translated to `new <expr>(<expr>)` and that is not currently supported. I added a workaround function named `clone` (it would be nice to support this somehow).

 * There is a change in `Objects.fs` that generates unit value when argument requires empty tuple (I hope this is the right way to do this):

        let construction = if refs = [] then Expr.Value( () ) else Expr.NewTuple(refs)

 * I included the "experimental" apiary.io provider in a separate [FSharp.Data.Experimental](nuget.org/packages/FSharp.Data.Experimental) package, so that is referenced (and I had to update FSharp.Data reference too).