added should that was missing from one spec's assertion
added should that was missing from one spec's assertion

johnmarinelli/nmatrix,agisga/nmatrix,wlevine/nmatrix,agisga/nmatrix,wlevine/nmatrix,thisMagpie/nmatrix,johnmarinelli/nmatrix,wlevine/nmatrix,wlevine/nmatrix,janusnic/nmatrix,agisga/nmatrix,janusnic/nmatrix,thisMagpie/nmatrix,johnmarinelli/nmatrix,johnmarinelli/nmatrix,agisga/nmatrix,thisMagpie/nmatrix,thisMagpie/nmatrix,janusnic/nmatrix,janusnic/nmatrix