update system integration and readme

etc/nginx/sites-available/oxdata

@@ -0,0 +1,44 @@
+server {
+    listen   80;
+    server_name  oxdata;
+
+    access_log  /var/log/nginx/oxdata.access.log;
+
+    location /admin/media {
+        root /srv/oxdata/lib/python3.5/site-packages/django/contrib;
+        autoindex on;
+    }
+    location /favicon.ico {
+        root   /srv/oxdata/oxdata/static;
+    }
+    location /robots.txt {
+        root   /srv/oxdata/oxdata/static;
+    }
+
+    location /static {
+        root   /srv/oxdata/oxdata;
+        autoindex on;
+    }
+    location /media/ {
+        internal;
+        root   /srv/oxdata/oxdata/;
+    }
+
+    location / {
+            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+            proxy_set_header Host $http_host;
+            proxy_set_header X-Forwarded-Proto http;
+            proxy_redirect off;
+
+            if (!-f $request_filename) {
+                proxy_pass http://127.0.0.1:8087;
+                break;
+            }
+    }
+    error_page  404  /404.html;
+    error_page  403  /404.html;
+    location  /404.html {
+        root   /srv/oxdata/oxdata/static;
+    }
+
+}

etc/systemd/system/oxdata.service

@@ -0,0 +1,23 @@
+[Unit]
+Description=oxdata daemon
+
+[Service]
+Type=simple
+Restart=always
+User=oxdata
+Group=oxdata
+PIDFile=/run/oxdata/oxdata.pid
+WorkingDirectory=/srv/oxdata/oxdata
+StandardOutput=syslog
+StandardError=syslog
+ExecReload=/bin/kill -HUP $MAINPID
+ExecStart=/srv/oxdata/bin/gunicorn \
+    wsgi:application \
+    -p /run/oxdata/oxdata.pid \
+    --bind 0.0.0.0:8087 \
+    --workers 5 \
+    --max-requests 1000 \
+    --log-level info
+
+[Install]
+WantedBy=multi-user.target

etc/tmpfiles.d/oxdata.conf

@@ -0,0 +1,2 @@
+d /run/oxdata 0755 oxdata oxdata -
+d /var/log/oxdata 0755 oxdata oxdata -