title: Error in Logout through MSAL.JS in Javascript / Angular 6 SPA application using B2C
body: <p>I have one Javascript SPA application using MSAL.JS for authentication against Azure AD B2C and another Angular 6 SPA application using MSAL for Angular against Azure AD B2C.</p>
  
  <p>In both the applications the logout is throwing below error.</p>
  
  <p>Correlation ID: 6de6e068-7b07-4d24-bac4-c1af3131815b
  Timestamp: 2018-09-25 16:16:20Z
  AADB2C90272: The id_token_hint parameter has not been specified in the request. Please provide token and try again.</p>
  
  <p>For Logout, MSAL has very simple logout api which does not take any parameter, so how can I provide id_token_hint? Am I missing something? Is there any config parameter I need to provide while injecting MsalModule in Angular Application. Or anything similar in Javascript app for Msal.UserAgentApplication.</p>