mkdir $(GH_PAGES)/test
cp -R ../html/* $(GH_PAGES)/test
git --work-tree=$(GH_PAGES) --git-dir=$(GH_PAGES)/.git add -A .
- git --work-tree=$(GH_PAGES) --git-dir=$(GH_PAGES)/.git commit --allow-empty -m "Updated doc from commit $(TRAVIS_COMMIT)."
+ -git --work-tree=$(GH_PAGES) --git-dir=$(GH_PAGES)/.git commit -m "Updated doc from commit $(TRAVIS_COMMIT)."
git --work-tree=$(GH_PAGES) --git-dir=$(GH_PAGES)/.git push