fix(Effects): Updated signature for with lift method (#163)

Fixes support for TypeScript >=2.4

closes #161

Author: smac89

src/actions.ts

@@ -14,7 +14,7 @@ export class Actions extends Observable<Action> {
     this.source = actionsSubject;
   }
 
-  lift(operator: Operator<any, Action>): Observable<Action> {
+  lift<Action>(operator: Operator<any, Action>): Observable<Action> {
     const observable = new Actions(this);
     observable.operator = operator;
     return observable;
@@ -35,4 +35,4 @@ export class Actions extends Observable<Action> {
       return false;
     });
   }
-}
+}