Update README.md

added transformer requirement to model card

README.md

@@ -11,6 +11,10 @@ pipeline_tag: text-classification
 ## Reddit post classification
 
 This model predicts the subreddit of a provided post  
+The transformers library is required
+```
+pip install 'transformers[torch]'
+```
 
 ```py
 from transformers import pipeline
@@ -20,7 +24,7 @@ pipe("Biden says US is at tipping point on gun control: We will ban assault weap
 
 ## Class Labels
 
-To translate the labels back to subreddit names you need to download the subreddits.json file from this repo manually
+To translate the labels back to subreddit names you need to download the `subreddits.json` file from this repo manually
 
 ```py
 import json