Heat Map with Categorical axes

I am trying to use StatPlots to create a heat map with categorical axes in v0.6

I have tried;
X = rand(3,3)
S = [“a”, “b”, “c”]
StatPlots.heatmap(X, xticks=S)

julia> using Plots

julia> heatmap(["A", "B"], ["foo", "bar"], randn(2,2))