update requirements.txt (pytorch#167)

raul-jr3 · chsasank · commit 345354a5050a · 2017-10-24T14:45:25.000+05:30
diff --git a/requirements.txt b/requirements.txt
@@ -9,3 +9,4 @@ torch
 # to run examples
 pandas
 scikit-image
+pillow
