Document how to change status page path

Author: renatomefi

README.md

@@ -83,7 +83,7 @@ Or with `verbose` to see php-fpm status output:
 
 ```console
 $ php-fpm-healthcheck -v
-Trying to connect to php-fpm via: localhost:9000
+Trying to connect to php-fpm via: localhost:9000/status
 php-fpm status output:
 pool:                 www
 process manager:      dynamic
@@ -140,6 +140,21 @@ $ echo $?
 0
 ```
 
+### Alternative status page path
+
+_Since v0.5.0_
+
+While the default status page path is `/status`, you can replace it in your php-fpm configuration, in order to change
+also in the script in you can specify `FCGI_STATUS_PATH` env var within your connection uri:
+
+```console
+$ FCGI_STATUS_PATH=/custom-status-path php-fpm-healthcheck -v
+Trying to connect to php-fpm via: localhost:9000/custom-status-path
+...
+$ echo $?
+0
+```
+
 ## Kubernetes example
 
 More and more people are looking for health checks on kubernetes for php-fpm, here is an example of livenessProbe and readinessProbe: