add appveyor status to readme
add appveyor status to readme

codegaze/jekyll-admin,codegaze/jekyll-admin,jekyll/jekyll-admin,ashmaroli/jekyll-admin,jekyll/jekyll-admin,ashmaroli/jekyll-admin,codegaze/jekyll-admin,ashmaroli/jekyll-admin,jekyll/jekyll-admin,ashmaroli/jekyll-admin,codegaze/jekyll-admin,jekyll/jekyll-admin