Add missing comma in composer.json
Merge pull request #1040 from shama/composer-comma

Add missing comma in composer.json
Fix failing tests.

This fixes some but not all the failing tests in the network group.
Merge branch '3.0' into 3.0-httpsocket
Adapt Network\Http\Client for path based cookies.

Following the details on http://curl.haxx.se/rfc/cookie_spec.html
cookies are matched by path now.
Update docs.