If you have wp-cli installed, try these steps:
# shell
1. wp plugin install nginx-champuru
2. wp plugin activate nginx-champuru
# shell, my conf
3. wp option update nginxchampuru-enable_flush 1
4. wp option update nginxchampuru-publish single
# browser at /wp-admin
5. Check menu item on admin sidebar
If you get trouble installing plugin using wp-cli, paste the error message here.