More comments in example

docs/Embed.md

@@ -15,8 +15,8 @@ Here's a minimal application `app.c` that embeds mongoose:
     #include "mongoose.h"
     int main(void) {
       struct mg_server *server = mg_create_server(NULL);
-      mg_set_option(server, "document_root", ".");
-      mg_set_option(server, "listening_port", "8080");
+      mg_set_option(server, "document_root", ".");  // Server current directory
+      mg_set_option(server, "listening_port", "8080");  // Open port 8080
       for (;;) mg_poll_server(server, 1000);  // Infinite loop, Ctrl-C to stop
       mg_destroy_server(&server);
       return 0;