Feature/update package json (#69)

* chore(package.json): Update package.json
* chore(gitignore): Update .gitignore

Author: Andrzej Sala

.gitignore

@@ -37,3 +37,4 @@ fabric.properties
 .DS_Store
 /tests/__coverage__/
 /examples/demo/build/
+/examples/demo/package-lock.json