Update README.md

README.md

@@ -17,6 +17,30 @@ This dataset was created using [LeRobot](https://github.com/huggingface/lerobot)
 
 ## Dataset Description
 
+This dataset is in lerobot format of version v2.1. (feel free to upgrade it to v3.0 using lerobot cli command)
+
+It only includes the part of `Core` from https://robomimic.github.io/docs/datasets/mimicgen.html.
+
+Therefore, in total, there are 120 human demonstrations / trajectories across 12 tasks. 
+
+Upstream files are from mimicgen : 
+```
+coffee.hdf5              hammer_cleanup.hdf5  mug_cleanup.hdf5   pick_place.hdf5  stack.hdf5        threading.hdf5
+coffee_preparation.hdf5  kitchen.hdf5         nut_assembly.hdf5  square.hdf5      stack_three.hdf5  three_piece_assembly.hdf5
+```
+
+
+
+I plan to push the part of `Source` which includes much more trajectories: 26,000 task demonstrations across 12 tasks (26 task variants)
+
+Upstream files
+```
+coffee_d0.hdf5              coffee_preparation_d1.hdf5  kitchen_d1.hdf5       pick_place_d0.hdf5  stack_d0.hdf5        threading_d0.hdf5             three_piece_assembly_d1.hdf5
+coffee_d1.hdf5              hammer_cleanup_d0.hdf5      mug_cleanup_d0.hdf5   square_d0.hdf5      stack_d1.hdf5        threading_d1.hdf5             three_piece_assembly_d2.hdf5
+coffee_d2.hdf5              hammer_cleanup_d1.hdf5      mug_cleanup_d1.hdf5   square_d1.hdf5      stack_three_d0.hdf5  threading_d2.hdf5
+coffee_preparation_d0.hdf5  kitchen_d0.hdf5             nut_assembly_d0.hdf5  square_d2.hdf5      stack_three_d1.hdf5  three_piece_assembly_d0.hdf5
+
+```
 
 
 - **Homepage:** [More Information Needed]