fix trailing slash

oauth3.core.js

@@ -930,7 +930,7 @@
           else {
             return OAUTH3.request({
               method: 'GET'
-            , url: OAUTH3.url.normalize(providerUri) + opts._pathname // '/.well-known/oauth3/' + discoverFile
+            , url: OAUTH3.url.normalize(providerUri) + '/' + opts._pathname // '/.well-known/oauth3/' + discoverFile
             }).then(function (resp) {
               return resp.data;
             });

well-known/oauth3/index.html

@@ -128,7 +128,7 @@
       onError(err);
     }
 
-    OAUTH3.request({ url: 'directives.json' }).then(function (resp) {
+    OAUTH3.request({ url: params._pathname.replace(/^\.well-known\/oauth3\//, '') }).then(function (resp) {
       urlsafe64 = OAUTH3._base64.encodeUrlSafe(JSON.stringify(resp.data, null, 0));
 
       onSuccess(urlsafe64);