allow passing array of methods to Slim\Route::via() and Slim\Route::appendHttpMethods()
add unit tests for the flash object
set the flash variable in the view
revert Guzzle to its initial definition
implement addHeader and addHeaders
do not use emtpy() method return
Merge pull request #798 from mnlg/implement-add-headers

Implement addHeader and addHeaders
Merge pull request #797 from mnlg/revert-guzzle

revert Guzzle to its initial definition
Merge pull request #792 from mnlg/set-flash-view

Set the flash variable in the view
Merge pull request #791 from mnlg/add-flash-tests

add unit tests for the flash object
don't explode headers
Merge pull request #805 from mnlg/dont-explode-headers

don't explode headers
remove output buffering
Merge pull request #806 from mnlg/remove-buffering

remove output buffering
test response send
Merge pull request #807 from mnlg/test-response-send

test response send
update guzzle
Merge pull request #808 from mnlg/update-guzzle

update guzzle streams
use php://input if body is null
Ignore PHPStorm config