Merge pull request cloudkick#37 from mago0/master

I didn't see any script that would just do a simple check to see that a port was open and the native cloudkick http/https checks don't do localhost

simple_port_check.sh

@@ -0,0 +1,25 @@
+#!/bin/bash
+
+# Cloudkick plugin to check that a port is open.
+# Alerts if a connection cannot be established.
+
+# ----------------------------------------------------------------------------
+# "THE BEER-WARE LICENSE" (Revision 42):
+# <matt@williams-tech.net> wrote this file. As long as you retain this notice you
+# can do whatever you want with this stuff. If we meet some day, and you think
+# this stuff is worth it, you can buy me a beer in return 
+# ----------------------------------------------------------------------------
+
+if [ $# -ne 1 ]; then
+  echo "Usage: $0 <port>"
+  exit
+fi
+
+PORT=$1
+
+nc 127.0.0.1 $PORT </dev/null
+if [ $? -ne 0 ]; then
+	echo "status err no server listening!"
+else
+  echo "status ok ok"
+fi