I supposed you have followed the guidelines provided in this documentation article: http://docs.telerik.com/kendo-ui/vs-intellisense
which should work for VS 2015 as well.
Normally the scripts are referenced in the Layout file, so intellisense should work there without the need to do anything special. However, you will need explicit references in view or in script files. For example:
/// <reference path="~/Scripts/kendo/2015.3.1111/jquery.min.js" />
/// <reference path="~/Scripts/kendo/2015.3.1111/kendo.all.min.js" />
// ...... intellisense will work here
Try using this approach and let me know if you still encounter problems with the intellisense.
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