compiler options set to -source 1.6 -target 1.6
Renamed delegate class to future invocation handlers
Use JDK proxies for sniffering SQL requests
Added javadoc to the Sniffer class since it is a public API
Merge pull request #4 from bedrin/feature/jdk-proxy

Feature/jdk proxy
Added javadoc to the ThreadLocalSniffer class since it is a public API
Merge pull request #5 from bedrin/develop

Develop