Update README

Author: mtfishman

README.md

@@ -9,21 +9,7 @@
 
 ## Installation instructions
 
-This package resides in the `ITensor/ITensorRegistry` local registry.
-In order to install, simply add that registry through your package manager.
-This step is only required once.
-```julia
-julia> using Pkg: Pkg
-
-julia> Pkg.Registry.add(url="https://github.com/ITensor/ITensorRegistry")
-```
-or:
-```julia
-julia> Pkg.Registry.add(url="git@github.com:ITensor/ITensorRegistry.git")
-```
-if you want to use SSH credentials, which can make it so you don't have to enter your Github ursername and password when registering packages.
-
-Then, the package can be added as usual through the package manager:
+The package can be added as usual through the package manager:
 
 ```julia
 julia> Pkg.add("ITensors")
@@ -32,10 +18,31 @@ julia> Pkg.add("ITensors")
 ## Examples
 
 ````julia
-using ITensors: ITensors
+using ITensors: ITensors, ITensor, Index
 ````
 
-Examples go here.
+TODO: This should be `TensorAlgebra.qr`.
+
+````julia
+using LinearAlgebra: qr
+using NamedDimsArrays: NamedDimsArray, aligndims, dimnames, name, unname
+using Test: @test
+i = Index(2)
+j = Index(2)
+k = Index(2)
+a = randn(i, j)
+@test a[j[2], i[1]] == a[1, 2]
+@test a[j => 2, i => 1] == a[1, 2]
+a′ = randn(j, i)
+b = randn(j, k)
+c = a * b
+@test unname(c, (i, k)) ≈ unname(a, (i, j)) * unname(b, (j, k))
+d = a + a′
+@test unname(d, (i, j)) ≈ unname(a, (i, j)) + unname(a′, (i, j))
+@test a ≈ aligndims(a, (j, i))
+q, r = qr(a, (i,))
+@test q * r ≈ a
+````
 
 ---
 

docs/Project.toml

@@ -1,4 +1,4 @@
 [deps]
-ITensors = "3b3c2350-9fb7-4c22-a0c2-b3f20f86ea25"
+ITensors = "9136182c-28ba-11e9-034c-db9fb085ebd5"
 Documenter = "e30172f5-a6a5-5a46-863b-614d45cd2de4"
 Literate = "98b081ad-f1c9-55d3-8b20-4c87d4299306"