add an example

ex.moon

@@ -0,0 +1,37 @@
+# ------------------------------------------------------------------------------
+# example config format
+#
+# this is a working draft of things that are valid in a new config language to
+# replace json as a config language for Go projects.
+#
+# comments are a thing now!
+# ------------------------------------------------------------------------------
+
+# the whole document is implicitly a namespace, so you can set key value pairs
+# at the top level.
+first_name: "jordan"
+last_name: "orelli"
+
+# lists of things should be supported
+items: [
+    "one"
+    2
+    3.4
+    ["five" 6 7.8]
+]
+
+# objects should be supported
+hash: {key: "value" other_key: "other_value"}
+
+other_hash: {
+    key_1: "one"
+    key_2: 2
+    key_3: 3.4
+    key_4: ["five" 6 7.8]
+}
+
+item_one: "this is item one"
+
+# we should be able to reference variables defined earlier
+# (this doesn't work yet)
+# item_two: item_one