Update README.md

Update README.md

Update README.md

Clean up the code

Update Readme

Fix important bug in decoder; now the baseline is the actual baseline.

remove dummy main_baseline, add --baseline support in main_model, fix a bug in baseline (or ablation)

modify config.py towards the best configuration

reduce the model size (msg passing)

add argparse configuration for quick model loading, fix an important bug in graph building and world embedding layer

add argparse configuration for model name and output redirection

modified the decoder behaviour

add preprocess script

fix bugs in model_comparer, now it can generates predict.json which fits with the GroundedGScan visualization code

move evaluate to utils.py, add model_comparer.py (potentially buggy)