Typescript 2.1.4 Release And ReadonlyArray

This release was made to handle Typescript 2.1.4 and readonly arrays. Added an interface so you can use Linq4Javascript off of this array type in Typescript.

 var _array: ReadonlyArray<number> = Object.freeze([1,2,3,4]);

 var results = _array.Where(x => x == 2).ToArray();