add bulk testing script

test/bulk.sh

@@ -0,0 +1,8 @@
+#!/bin/bash
+dir="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
+rm -f "$dir/../skins/"*.png || exit 1
+for uuid in `cat "$dir/uuids.txt"`; do
+  uuid=`echo "$uuid" | tr -d '\r'`
+  size=$(( ((RANDOM<<15)|RANDOM) % 514 - 1 )) # random number from -1 to 513
+  curl -sS -o /dev/null -w "%{url_effective} %{http_code} %{time_total}s\\n" "http://127.0.0.1:3000/avatars/$uuid/$size"
+done