Issue template

Author: adamkleingit

.github/ISSUE_TEMPLATE.md

@@ -9,7 +9,7 @@ Please look for an answer in the docs before submitting an issue:
 angular2-tree.readme.io.
 
 In case you are reporting a bug, or requesting help, please reproduce it in a GIT repo or fork this online template:
-https://plnkr.co/edit/u5fMmaM14rJ0aqG3k240?p=preview
+https://plnkr.co/edit/IU8cKYHL7h2YeFMdcAzE?p=preview
 
 If you are unable to reproduce, please:
 - paste your package.json