Only raise a warning for privileged port binds

On MacOS (and on Linux if using authbind) you don't actually need
to use sudo to bind to ports < 1024, so node-foreman does not need
to raise an error if that happens. Since we can't detect if this
system will or will not require sudo we can just raise a warning.

Signed-off-by: Matthew Allan <[email protected]>

Author: matt-allan

lib/proc.js

@@ -107,8 +107,8 @@ function start(procs, requirements, envs, portarg, emitter){
   var port = parseInt(portarg);
 
   if(port < 1024) {
-    return cons.Error('Only Proxies Can Bind to Privileged Ports - '+
-                      'Try \'sudo nf start -x %s\'', port);
+    cons.Warn('May Not Be Able To Bind to Privileged Port - '+
+                      'If Start Fails Try \'sudo nf start -x %s\'', port);
   }