Added userSignedIn() method. Fixes #24

Author: neroniaky

README.md

@@ -104,8 +104,8 @@ constructor(private _tokenService: Angular2TokenService) {
 
         globalOptions: {
             headers: {
-                'Content-Type': 'application/json',
-                'Accept':       'application/json'
+                'Content-Type':     'application/json',
+                'Accept':           'application/json'
             }
         }
     });

src/angular2-token.service.ts

@@ -44,8 +44,12 @@ export class Angular2TokenService implements CanActivate {
         private _router: Router
     ) { }
 
+    userSignedIn(): boolean {
+        return !!this._currentAuthData;
+    }
+
     canActivate() {
-        if (this._currentUserData)
+        if (this.userSignedIn())
             return true;
         else {