Added convenience check input function to util.py
Added convenience check input function to util.py

numenta/NAB,orzinal/test,kimhungGCZ/combinedAL,numenta/NAB,BoltzmannBrain/NAB,numenta/NAB,scottpurdy/NAB,orzinal/test,kimhungGCZ/combinedAL,metaml/NAB,metaml/NAB,numenta/NAB,MauricioRoman/NAB,kimhungGCZ/combinedAL,rhyolight/NAB,jonathanstrong/NAB,jonathanstrong/NAB,subutai/NAB,metaml/NAB,breznak/NAB,MauricioRoman/NAB,rhyolight/NAB,subutai/NAB,scottpurdy/NAB,jonathanstrong/NAB,BoltzmannBrain/NAB,MauricioRoman/NAB,rhyolight/NAB,subutai/NAB,breznak/NAB,breznak/NAB,scottpurdy/NAB