composer.json: Correct license identifier
authorKevin Israel <pleasestand@live.com>
Sat, 31 Jan 2015 23:49:49 +0000 (18:49 -0500)
committerKevin Israel <pleasestand@live.com>
Sun, 1 Feb 2015 01:10:44 +0000 (20:10 -0500)
commitefccdd5700ecb9ed158702ea4f52338dac8c97d7
tree76aa3f307b35e2dfca2a75c6271a76c67f66749c
parentc331b860358ffa840a8fa8e7d832edd73291910a
composer.json: Correct license identifier

According to <https://spdx.org/licenses/>, "GPL-2.0" means "GNU General
Public License v2.0 only", not "GNU General Public License v2.0 or later",
which has the identifier "GPL-2.0+".

Also made the same change in the documentation for $wgExtensionCredits.

Change-Id: If25c15d03a71d7c50c9c85a04c2a589a3d978ad0
composer.json
includes/DefaultSettings.php