Regenerate README

Author: mtfishman

README.md

@@ -52,6 +52,7 @@ AbstractArray interface:
 
 ````julia
 a[1, 2] = 12
+@test a == [0 12; 0 0]
 @test a[1, 1] == 0
 @test a[2, 1] == 0
 @test a[1, 2] == 12
@@ -76,6 +77,17 @@ SparseArraysBase interface:
 @test issetequal(storedvalues(a), [12])
 ````
 
+AbstractArray functionality:
+
+````julia
+b = a .+ 2 .* a'
+@test b == [0 12; 24 0]
+@test storedlength(b) == 2
+@test b isa SparseArrayDOK{Float64}
+
+a * a'
+````
+
 ---
 
 *This page was generated using [Literate.jl](https://github.com/fredrikekre/Literate.jl).*