Include 'running since' in the footer

main.c

@@ -9,6 +9,7 @@
 
 #include "routes.h"
 #include "baked.h"
+#include "timer.h"
 
 Route *route_hashtable = NULL;
 
@@ -109,6 +110,8 @@ void init_route_hashtable(void)
 
 int main(int argc, char ** argv)
 {
+    start_timer();
+
     init_baked_resources();
 
     mg_log_set(MG_LL_DEBUG);