add settings command

Hello,

add command "settings" as synonym to gnome-control-center.

cd /usr/loca/bin
ln gnome-control-center settings

See http://askubuntu.com/questions/116655/what-is-the-command-to-run-system-settings-from-a-terminal

ProblemType: Bug
DistroRelease: Ubuntu 13.04
Package: gnome-control-center 1:3.6.3-0ubuntu24.1
ProcVersionSignature: Ubuntu 3.8.0-29.21-lowlatency 3.8.13.5
Uname: Linux 3.8.0-29-lowlatency i686
ApportVersion: 2.9.2-0ubuntu8.3
Architecture: i386
Date: Thu Sep 5 10:38:00 2013
EcryptfsInUse: Yes
MarkForUpload: True
SourcePackage: gnome-control-center
UpgradeStatus: Upgraded to raring on 2013-08-11 (24 days ago)
usr_lib_gnome-control-center:
 activity-log-manager-control-center 0.9.4-0ubuntu6.2
 deja-dup 26.0-0ubuntu1
 gnome-control-center-signon 0.1.6bzr13.04.05-0ubuntu1.1
 gnome-control-center-unity 1.3daily13.06.19~13.04-0ubuntu1
 indicator-datetime 12.10.3daily13.03.26-0ubuntu1