ignore generated caffe2 docs and virtualenvs

Summary: Pull Request resolved: pytorch#14309

Reviewed By: soumith

Differential Revision: D13166626

Pulled By: JoelMarcey

fbshipit-source-id: 4f11228d8b5da85cec222bf11282722a7319581b

.gitignore

@@ -192,6 +192,9 @@ MANIFEST-*
 # generated version file
 caffe2/version.py
 
+# generated caffe2 docs
+docs/caffe2/
+
 # setup.py intermediates
 .eggs
 caffe2.egg-info
@@ -221,3 +224,6 @@ TAGS
 # Files generated when a patch is rejected
 *.orig
 *.rej
+
+# virtual environments
+venv/