Add JSON5 deserialization

tests/integration.rs

@@ -34,3 +34,23 @@ fn ron_to_json() {
 
     assert_eq!(control, out);
 }
+
+#[test]
+fn json5_read_json() {
+    let opt = Opt {
+        input: Input::Json5,
+        output: Output::Json,
+        pretty: true,
+        no_newline: false,
+    };
+
+    let input = example_to_vec("examples/materials.json");
+
+    let mut output = vec![];
+    transcode(opt, &mut input.as_slice(), &mut output);
+    let out = String::from_utf8(output).unwrap();
+
+    let control = example_to_string("examples/materials.json");
+
+    assert_eq!(control, out);
+}