Add TypeScript definitions and tests for Bootstrap TouchSpin (http://www.virtuosoft.eu/code/bootstrap-touchspin/)

- Rename to bootstrap-touchspin as suggested in https://github.com/borisyankov/DefinitelyTyped/pull/4054#issuecomment-90607707

bootstrap-touchspin/bootstrap-touchspin-tests.ts

@@ -1,5 +1,5 @@
 /// <reference path="../jquery/jquery.d.ts" />
-/// <reference path="jquery.bootstrap-touchspin.d.ts" />
+/// <reference path="bootstrap-touchspin.d.ts" />
 
 $(function () {
     // Example 1 from http://www.virtuosoft.eu/code/bootstrap-touchspin/