up readme corpus size

README.md

@@ -57,7 +57,7 @@ labels # ['attack', 'neutral', 'support', 'attack']
 
 ## Intended uses & limitations
 
-Classification in short text up to 200 tokens (maxlen).
+Model suited for classification of stance in short text. Fine-tuned on a manually-annotated corpus of size 3.2k.
 
 
 ## Training procedure
@@ -85,4 +85,6 @@ It achieves the following results on the evaluation set:
            positive      0.759     0.775     0.767       191
            negative      0.769     0.714     0.741        84
 
-    
+
+## Citation
+**BibTeX**: tba