Add logos, update URLs (#3)

Author: mtfishman

README.md

@@ -1,9 +1,9 @@
 # ITensor ecosystem documentation
 
-Welcome to the [ITensor ecosystem documentation](https://itensor.github.io/ITensorDocs/Overview/)!
+Welcome to the [ITensor ecosystem documentation](https://docs.itensor.org)!
 This is an aggregation of the documentation of various packages in the ITensor ecosystem,
-such as [ITensors.jl](https://itensor.github.io/ITensorDocs/ITensors/stable/)
-and [ITensorMPS.jl](https://itensor.github.io/ITensorDocs/ITensorMPS/stable/).
+such as [ITensors.jl](https://docs.itensor.org/ITensors)
+and [ITensorMPS.jl](https://docs.itensor.org/ITensorMPS).
 
 ## Support
 

docs/make.jl

@@ -57,6 +57,10 @@ MultiDocumenter.make(
   rootpath="/ITensorDocs/",
   canonical_domain="https://itensor.github.io/",
   sitemap=true,
+  assets_dir="docs/src/assets",
+  brand_image=MultiDocumenter.BrandImage(
+    "https://itensor.org", joinpath("assets", "logo.png")
+  ),
 )
 
 if "deploy" in ARGS

docs/src/assets/favicon.ico

@@ -1,9 +1,9 @@
 # # ITensor ecosystem documentation
 # 
-# Welcome to the [ITensor ecosystem documentation](https://itensor.github.io/ITensorDocs/Overview/)!
+# Welcome to the [ITensor ecosystem documentation](https://docs.itensor.org)!
 # This is an aggregation of the documentation of various packages in the ITensor ecosystem,
-# such as [ITensors.jl](https://itensor.github.io/ITensorDocs/ITensors/stable/)
-# and [ITensorMPS.jl](https://itensor.github.io/ITensorDocs/ITensorMPS/stable/).
+# such as [ITensors.jl](https://docs.itensor.org/ITensors)
+# and [ITensorMPS.jl](https://docs.itensor.org/ITensorMPS).
 
 # ## Support
 #