Removed detection of JSON request from REST controller, use Application instead it
Added License badge to README.md
Removed unused code
Fixed Config tests
Added test for `Common\Nil`
Added test for `Common\Options`
Added test for `Acl` package
Merge pull request #206 from AntonShevchuk/master

Added License badge to README.md	0ea2dee
Added test for `Acl` package
Added test for `Common\Nil`
Added test for `Common\Options`
Removed detection of JSON request from REST controller
Fixed Config tests