Merge pull request #201 from bechhansen/clientid_logout

Added support for logout using client id.

Author: manfredsteyer

angular-oauth2-oidc/src/oauth-service.ts

@@ -1511,7 +1511,9 @@ export class OAuthService
 
         // For backward compatibility
         if (this.logoutUrl.indexOf('{{') > -1) {
-            logoutUrl = this.logoutUrl.replace(/\{\{id_token\}\}/, id_token);
+            logoutUrl = this.logoutUrl
+                .replace(/\{\{id_token\}\}/, id_token)
+                .replace(/\{\{client_id\}\}/, this.clientId);
         }
         else {
             logoutUrl = this.logoutUrl +