Add explicit viewer configs and fix documented feature list

README.md

@@ -7,6 +7,15 @@ task_categories:
 pretty_name: Nyra Disfluency Speech English
 size_categories:
 - 1K<n<10K
+configs:
+- config_name: default
+  data_files:
+  - split: train
+    path: data/train-*
+  - split: validation
+    path: data/validation-*
+  - split: test
+    path: data/test-*
 ---
 
 # Nyra Disfluency Speech English
@@ -53,8 +62,6 @@ Features:
 - `speaker`
 - `verbatim_transcript`
 - `intended_transcript`
-- `timings`
-- `verbatim_timings`
 
 ## Transcription Conventions