Add project files

examples/json/example.json

@@ -0,0 +1,8 @@
+{
+  "name": "antlrlab",
+  "tags": ["parser", "antlr", "diagram"],
+  "version": 1.0,
+  "stable": true,
+  "owner": null,
+  "nested": { "depth": 2, "items": [1, 2, 3] }
+}