Added example using Dropwizard

Simple integration test demonstrating use of DropwizardAppRule and correct syntax for Jersey 2.13.
Removed unnecessary comments.
Update DataSourceFactory.maxSize api docs

* maxSize is initialized to 100, not 10
Merge pull request #792 from LeekAnarchism/fix_maxSize_docs

Fix DataSourceFactory.maxSize Javadoc
Merge pull request #790 from Jerry-Carter/master

Simple DropwizardAppRule integration test for dropwizard-example