Provide sample JSON file and update instruction in docs

The documentation for generating a transformation of a JSON file into
a Terse RDF Triple Language (Turtle) form was incomplete. This commit
provides a sample JSON file that can be used to demonstrate the
working of the code.

Reviewed-by: Munyoki Kilyungi <me@bonfacemunyoki.com>

1 files changed, 8 insertions, 0 deletions

diff --git a/etc/sample.json b/etc/sample.json
new file mode 100644
index 0000000..b32e24c
--- /dev/null
+++ b/etc/sample.json
@@ -0,0 +1,8 @@
+{
+    "metadata": {
+        "name": "some-metadata-item-name",
+        "displayName": "the-item-display-name",
+        "createdBy": "Frederick M. Muriithi"
+        "why": "to-demo-usage-of-system-and-for-documentation"
+    }
+}