Updated callback url

Author: shalin-jasani747

android/src/main/java/io/fullstack/oauth/OAuthManagerModule.java

@@ -113,7 +113,7 @@ public void authorize(
       final String authVersion = (String) cfg.get("auth_version");
       Activity activity = this.getCurrentActivity();
       FragmentManager fragmentManager = activity.getFragmentManager();
-      String callbackUrl = "http://localhost/" + providerName;
+      String callbackUrl = "https://localhost/" + providerName;
 
       OAuthManagerOnAccessTokenListener listener = new OAuthManagerOnAccessTokenListener() {
         public void onRequestTokenError(final Exception ex) {