1158 changing visibility to twitter callback method

Author: Mario

extensions/servlet/src/main/java/com/stormpath/sdk/servlet/mvc/provider/TwitterCallbackController.java

@@ -13,7 +13,7 @@
 public class TwitterCallbackController extends AbstractSocialCallbackController {
 
     @Override
-    protected ProviderAccountRequest getAccountProviderRequest(HttpServletRequest request) {
+    public ProviderAccountRequest getAccountProviderRequest(HttpServletRequest request) {
         String accessToken = ServletUtils.getCleanParam(request, "accessToken");
         String accessTokenSecret = ServletUtils.getCleanParam(request, "accessTokenSecret");