docs: Fix example memory leak from Dynamic.jsx

Author: Nick Ardecky

.gitignore

@@ -26,4 +26,7 @@ dist/zingchart-react.es.js.map
 
 ## Unignored Files
 !dist/modules/**
-!dist/zingchart-react.js
+!dist/zingchart-react.js
+
+# Example files
+example/package-lock.json