-> 1.1.1

clean up metricRegistry in close() (SimpleFinance#7)

Simply log warn message if metric already exists

Use metrics-core instead of dropwizard-metrics (SimpleFinance#3)

There are no Dropwizard-specific classes being used in this project. It only depends
on the Dropwizard Metrics library.

Add an example Dropwizard application (SimpleFinance#2)

* Add example Dropwizard application

* Link to example/ in main README