fix(ng1.StateProvider): Export StateProvider class so type can be used

Author: christopherthielen

src/ng1.ts

@@ -9,6 +9,7 @@ export * from "./core";
 export * from "./ng1/interface";
 export * from "./ng1/services";
 export * from "./ng1/statebuilders/views";
+export * from "./ng1/stateProvider";
 
 import "./ng1/directives/stateDirectives";
 import "./ng1/stateFilters";