Merge pull request #26 from simmbot/master

Fix errno compilation error (found on Ubuntu 14.04)

src/conn.c

@@ -34,6 +34,7 @@
 #include "config.h"
 
 #include <assert.h>
+#include <errno.h>
 #include <fcntl.h>
 #include <stdio.h>
 #include <stdlib.h>