Added example of taking multiple screenshots by passing array
Added example of taking multiple screenshots by passing array

tpgmartin/PhantomCSS,smrq/PhantomCSS,Huddle/PhantomCSS,gdseller/PhantomCSS,istr/PhantomCSS,aeharding/PhantomCSS,aeharding/PhantomCSS,Huddle/PhantomCSS,gdseller/PhantomCSS,smrq/PhantomCSS,shakyShane/css-reg-test,tpgmartin/PhantomCSS,istr/PhantomCSS,tazminweb/PhantomCSS,tazminweb/PhantomCSS,shakyShane/css-reg-test