Added method clear() to toaster service which hides all toasts
Added method clear() to toaster service which hides all toasts

jianganglu/AngularJS-Toaster,deltreey/AngularJS-Toaster,maxdow/AngularJS-Toaster,kayhadrin/AngularJS-Toaster,jdforsythe/AngularJS-Toaster,olasfar/AngularJS-Toaster,CarmelSoftware/AngularJS-Toaster,whoadave/angular-bootstrap-toaster,hobbesmedia/AngularJS-Toaster,Stabzs/AngularJS-Toaster,jirikavi/AngularJS-Toaster