improve readme

README.md

@@ -6,26 +6,34 @@ https://github.com/captncraig/caddy-realip
 
 ## Syntax
 ```Caddyfile
+
+# tell caddy to process realip before other plugins
+order realip first
+
 realip {
     header name
-    from cidr 
+    from cidr
     maxhops #
     strict
 }
 ```
-name is the name of the header containing the actual IP address. recommended value is "X-Forwarded-For".
+`name` is the name of the header containing the actual IP address. recommended value is "X-Forwarded-For".
 
-cidr is the address range of expected proxy servers. As a security measure, IP headers are only accepted from known proxy servers. Must be a valid cidr block notation. This may be specified multiple times. "cloudflare" is an acceptable preset.
+`cidr` is the address range of expected proxy servers. As a security measure, IP headers are only accepted from known proxy servers. Must be a valid cidr block notation. This may be specified multiple times. `cloudflare` and `cloudfront` are currently supported.
 
-maxhops specifies a limiting number of forwards if using "X-Forwarded-For" or similar headers as the identifier. recommended value is 5.
+`maxhops` specifies a limiting number of forwards if using "X-Forwarded-For" or similar headers as the identifier. Recommended value is 5.
 
-strict, if specified, will reject requests from unkown proxy IPs with a 403 status. If not specified, it will simply leave the original IP in place.
+`strict`, if specified, will reject requests from unkown proxy IPs with a 403 status. If not specified, it will simply leave the original IP in place.
 
 ## Example
 
 Simple usage to read `X-Forwarded-For` from cloudflare:
 
 ```Caddyfile
+
+# tell caddy to process realip before other plugins
+order realip first
+
 realip {
   header "X-Forwarded-For"
   from cloudflare