Remove composer installed phpunit.

A few people have asked to remove this dependency as it makes
installation slower.
Convert PHPUnit into a suggested package.
Resolve folder name conflicts in View
correct package names
Merge pull request #1 from rchavik/pr-3

Remove PHPUnit from the require-dev packages.

Many people install PHPUnit systemwide, and this will be duplication for them. PHPUnit has its own complex dependency graphs which slows down the initial installation.
Remove repositories key.

Now that cakephp 3.x is on packagist there is no need to specify the
repository.
Merge pull request #2 from rchavik/pr-4

PR 4 from original repo
doc block corrections, remove @package
remove remaining @ package declarations
Merge pull request #3 from dereuromark/master-docblocks

doc block corrections, remove @package
Fix wording in suggest key.
Serving static files when using the built-in webserver.

From PHP's documentation:
> If a PHP file is given on the command line when the web server is started it is treated as a "router" script. The script is run at the start of each HTTP request. If this script returns FALSE, then the requested resource is returned as-is. Otherwise the script's output is returned to the browser.

In order to serve the static files from webroot directory it is necessary to `return false` on the router script and let the webserver serve it.
Preventing directory traversal.
is_file() already checks if the file exists, no need for file_exists().
Merge pull request #4 from cakephp/3.0-webserver-fix

Serving static files when using the built-in webserver.
Fix typo for persistent value
Merge pull request #5 from junichi11/patch-1

Fix typo for persistent value
Update docblock comments.

Session is now under Cake\Network namespace.
CakePHP's SessionHandlerInterface has been replaced by the one provided by PHP itself.
Added info about the new "requestCountdown" session config variable.

Refs cakephp/cakephp#2373
Remove flash layout.

Controller::flash() is being removed in cakephp/cakephp#2385. Sync that
change here.