Update LICENSE
Update LICENSE

added the 2013 date on it
glogiotatidis/mozillians-new,akatsoulas/mozillians,justinpotts/mozillians,anistark/mozillians,glogiotatidis/mozillians-new,safwanrahman/mozillians,mozilla/mozillians,ChristineLaMuse/mozillians,fxa90id/mozillians,brian-yang/mozillians,akatsoulas/mozillians,akarki15/mozillians,hoosteeno/mozillians,akatsoulas/mozillians,glogiotatidis/mozillians-new,chirilo/mozillians,hoosteeno/mozillians,glogiotatidis/mozillians-new,mozilla/mozillians,justinpotts/mozillians,justinpotts/mozillians,johngian/mozillians,johngian/mozillians,chirilo/mozillians,mozilla/mozillians,akatsoulas/mozillians,fxa90id/mozillians,brian-yang/mozillians,akarki15/mozillians,chirilo/mozillians,brian-yang/mozillians,akarki15/mozillians,safwanrahman/mozillians,johngian/mozillians,anistark/mozillians,akarki15/mozillians,hoosteeno/mozillians,justinpotts/mozillians,fxa90id/mozillians,anistark/mozillians,ChristineLaMuse/mozillians,johngian/mozillians,anistark/mozillians,brian-yang/mozillians,chirilo/mozillians,safwanrahman/mozillians,hoosteeno/mozillians,ChristineLaMuse/mozillians,safwanrahman/mozillians,mozilla/mozillians,fxa90id/mozillians