fix(redirectTo): fix redirectTo definition (interface)

fix(interface): export interfaces

closes #2871

src/common/module.ts

@@ -1,4 +1,5 @@
 /** @module common */ /** for typedoc */
+export * from "./interface";
 export * from "./common";
 export * from "./coreservices";
 export * from "./glob";

src/ng1.ts

@@ -6,6 +6,7 @@
 
 export * from "./core";
 
+export * from "./ng1/interface";
 export * from "./ng1/services";
 export * from "./ng1/statebuilders/views";
 

src/state/interface.ts

@@ -451,10 +451,9 @@ export interface StateDeclaration {
    *   }
    * })
    */
-  redirectTo?: (
-      ($transition$: Transition) => TargetState |
-      { state: (string|StateDeclaration), params: { [key: string]: any }} |
-      string
+  redirectTo?: ( string |
+          (($transition$: Transition) => TargetState) |
+          { state: (string|StateDeclaration), params: { [key: string]: any }}
   )
 
   /**