Fixed link to http://www.mysqlperformanceblog.com
Fixing SQL in README
Slightly PEP-8-fying, but trying to save local coding style
Adding db connect port parameter to config
Make statsd properly optional
Fixing db connection port
Providing reporting to Graphite
Adding Graphite parameters to README
Merge pull request #1 from deniszh/master

Adding Graphite graphing, DB connect port, fixing small typos