Added list of contributors to the authors section
Added missing tests to gain 100% LOC and removed some dead code
Realized that Monolog unfortunately is not compatible with psr/log/LoggerInterface, so added an adaptor for those who want to use monolog
Merge branch 'master' of https://github.com/liip/DataAggregator
Added a Logging section to explain why there is an Monolog adaptor is necessary