Examples of using status header and use input in CLI
Describing Web Application configuration options during initialisation, redirect and setHeader methods
Removed info about redirect method and improved setHeader
Updated Monolog\Logger
Merge pull request #320 from piotr-cz/docs_Application

Improvements to Application docs
docblock fix
Merge pull request #322 from piotr-cz/docblock_DI

DI: docblock fix