Update dataset-metadata.json

dataset-metadata.json

@@ -0,0 +1,9 @@
+{
+  "licenses": [
+    {
+      "name": "CC0-1.0"
+    }
+  ], 
+  "id": "rohanrajpal/codemix-hi-en-preprocessing", 
+  "title": "codemix-hi-en-preprocessing"
+}