e8714642bd
tox -e releasenotes fails with: Warning, treated as error: WARNING: html_static_path entry u'/home/aj/vcs/OpenStack/openstack/cursive/releasenotes/source/_static' does not exist Add missing directory - like done on similar projects -, using a placeholder to make git happy. Also, add build directory to .gitignore. Remove .placeholder from .gitignore, those files are important! Change-Id: I20d9881975eb491f6a977ae2de9406e64a659ca9