Added additional module declaration.

sammyjs/sammyjs.d.ts

@@ -276,6 +276,10 @@ declare module Sammy {
 	}
 }
 
+declare module "sammy" {
+    export = Sammy;
+}
+
 interface JQueryStatic {
 	sammy: Sammy.SammyFunc;
 	log: Function;