Support for Xamarin / Mono for latest version of jurassic

[patriklindstrom]

Would be great to use this library in app development but
I did not get the nuget package or any of the branches of jurassic to work in my Xamarin project. I did however find a three year old fork of the project that @vargaz has made commitments to. And I got it to work. mono/jurassic Would be great if it could be merged .

[patriklindstrom]

Ok I have not tested it yet on iOS. According to this article it might not work. https://developer.xamarin.com/guides/ios/advanced_topics/limitations/#No_Dynamic_Code_Generation . Maybe I have to call on iOS native stuff for iPhone.

[niuk]

Define __MonoCS__ in the Jurassic project to use the ReflectionEmitILGenerator instead.

[tomasz-soltysik]

@niuk Now this define does nothing (at least in master branch).
I think limitation @patriklindstrom told about is still intact.

[Lelelo1]

Which version supports mono? Could I be hit by it?: #169