added tag reporting, instance metrics script, retries/timeout (limited) and twitter followers fix

-Fixed and renamed the twitter followers script to use v1.1 api
-Added a timeout and retry around Graphite and the CW metric scripts that I touched (added a TODO to make this more universal)
-Added (optional) tag reporting to the AWScountEC2.rb script
-Added a AWScloudwatchEC2.rb script to capture EC2 instance metrics from CW
-Updated config sample and added new options