add json func

~/nginx/README.md

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+# nginx
+
+- [`redirect`](redirect)

~/nginx/redirect.conf

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+server {
+    listen 80;
+
+    server_name SITE_URL;
+
+    location /robots.txt {
+        root FOLDER;
+    }
+
+    location / {
+        return 301 https://$host$request_uri;
+    }
+}
+
+server {
+    listen 443 ssl;
+
+    server_name SITE_URL;
+
+    ssl_certificate PATH_TO_PEM;
+    ssl_certificate_key PATH_TO_PEM;
+
+    root FOLDER;
+}