use librato annotations, this could be squashed

send informationa bout errors connecting the the info_server. This requires
using the librato metrics fork:

https://github.com/djosephsen/python-librato

Switch back to using the librato main version when this pull request is closed:

https://github.com/librato/python-librato/pull/47
handle xmlrpclib.Fault from the info server.

If there is a bug in the info server RPC code that throws an exception
we want to log and push an event to librato. Previously we were just
exiting.
handle socket.gaierror when connecting to xmlrpc
add init.d script and fix exception handling bug
init script fixup and new README for stats

init script for cloud-scheduler-stats now uses runuser function and prints
out nice colored  [OK] and [Failure] text, in addition to actually
working.

Add a readme file for cloud-scheduler-stats
require librato-metrics 0.4.11 for cloud-scheduler-stats