Merge pull request pytorch#328 from ericnakagawa/rc1

Fixing locale bug by pinning sphinx to 1.7.9

Author: ericnakagawa

requirements.txt

@@ -1,6 +1,6 @@
 # Refer to ./jenkins/build.sh for tutorial build instructions 
 
-sphinx
+sphinx==1.7.9
 sphinx-gallery
 tqdm
 numpy