adding hf config

config.json

@@ -0,0 +1,8 @@
+{
+  "hf_demo": {
+    "nn_model": "exp/cpu_jit-torch-1.6.0.pt",
+    "bpe_model": "data/lang_bpe_500/bpe.model",
+    "num_active_paths": 4,
+    "sample_rate": 16000
+  }
+}