Make generating the docs more robust
./go javadocs || exit
# Python
-./go py_docs || exit
+./go //py:setup //py:init py_docs || exit
# Ruby
./go //rb:docs || exit
+git checkout rb/Gemfile.lock
+
# switch to gh-pages and copy the files
git checkout gh-pages || exit
rm -rf docs/api/java docs/api/py docs/api/rb
