added refresh method from gotrue

README.md

@@ -71,6 +71,9 @@ netlifyIdentity.close();
 
 // Log out the user
 netlifyIdentity.logout();
+// refresh the user's JWT 
+// Note: this method returns a promise.
+netlifyIdentity.refresh().then((jwt)=>console.log(jwt))
 ```
 
 #### A note on script tag versioning
@@ -113,6 +116,10 @@ netlifyIdentity.close();
 // Log out the user
 netlifyIdentity.logout();
 
+// refresh the user's JWT 
+// Note: this method returns a promise.
+netlifyIdentity.refresh().then((jwt)=>console.log(jwt))
+
 // Access the underlying GoTrue JS client.
 // Note that doing things directly through the GoTrue client brings a risk of getting out of
 // sync between your state and the widget’s state.

src/netlify-identity.js

@@ -47,6 +47,12 @@ const netlifyIdentity = {
     }
     return store.gotrue;
   },
+  refresh(force) {
+    if (!store.gotrue) {
+      store.openModal("login");
+    }
+    return store.gotrue.currentUser().jwt(force);
+  },
   init: options => {
     init(options);
   },