fix install issues, README instructions should work out-of-the-box now

Author: cpacker

environment.yaml

@@ -22,6 +22,8 @@ dependencies:
     - einops==0.3.0
     - torch-fidelity==0.3.0
     - transformers==4.19.2
+    - torchmetrics==0.6.0
+    - kornia==0.6
     - -e git+https://github.com/CompVis/taming-transformers.git@master#egg=taming-transformers
     - -e git+https://github.com/openai/CLIP.git@main#egg=clip
     - -e .